1) Window update. When the browser window comes to the fore

I haven't heard of this.

Start Firefox using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?

2) I have just experienced CAPTCHA issues

Make sure you are not blocking content.

Diagnose Firefox issues using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?

https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Delete cookies to remove the information websites have stored on your computer {web link}

• How to clear the Firefox cache {web link}

I can confirm that the window-update problem does not occur in safe mode.

Reproducing this is easy (for me): just minimize and restore the Firefox window a couple of times (usually only takes 1 or 2 goes), or do the same with another program so that it obscures the Firefox window (again, 1 or 2 goes needed).

I haven't retried the CAPTCHA problem because the gov.ie site is new, and not entirely working properly. It's also inconvenient to clear my cookies at the moment. [Edit: that site has now removed its CAPTCHA so it looks like it had a problem and it wasn't the fault of Firefox]

I can confirm that the window-update problem does not occur in safe mode.

Reproducing this is easy (for me): just minimize and restore the Firefox window a couple of times (usually only takes 1 or 2 goes), or do the same with another program so that it obscures the Firefox window (again, 1 or 2 goes needed).

I haven't retried the CAPTCHA problem because that gov.ie site has now removed its CAPTCHA so it looks like it had a problem and it wasn't the fault of Firefox.

When someone comes to look at this, you may find that it doesn't happen on all machines. I have 3 Windows 7 64-bit machines here, all on the latest Firefox, but only one is showing this issue. It is very consistent, and somewhat annoying.

Please feel free to ask me for my settings, or anything else that will pin down the root cause.

On the unit with the problem;

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Now in the Reply Box on the forum page, do a right-click in the box and select Paste.

If the data is too big, do not worry. It's the top part we need to look at.

This will show us your system details. No Personal Information Is Collected.

ID: langpack-en-GB@firefox.mozilla.org

Graphics

Features Compositing: WebRender (Software D3D11) Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000023944) EGL_VERSION: 1.5 (ANGLE 2.1.14226 git hash: 31a43497be09) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control IsWebglOutOfProcessEnabled: 1 WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D11 vs_4_0 ps_4_0) WebGL 1 Driver Version: OpenGL ES 2.0.0 (ANGLE 2.1.14226 git hash: 31a43497be09) WebGL 1 Driver Extensions: GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_WEBGL_video_texture WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context WebGL 2 Driver WSI Info: - WebGL 2 Driver Renderer: WebGL creation failed: * tryANGLE (FEATURE_FAILURE_EGL_NO_CONFIG) * Exhausted GL driver options. (FEATURE_FAILURE_WEBGL_EXHAUSTED_DRIVERS) WebGL 2 Driver Version: - WebGL 2 Driver Extensions: - WebGL 2 Extensions: - Direct2D: true Target Frame Rate: 60 DirectWrite: true (6.2.9200.22902) GPU #1 Active: Yes Description: Intel(R) HD Graphics Vendor ID: 0x8086 Device ID: 0x0046 Driver Version: 8.15.10.2827 Driver Date: 7-31-2012 Drivers: igdumd64 igd10umd64 igdumdx32 igd10umd32 Subsys ID: 04571028 RAM: 0 GPU #2 Active: No RAM: 0 Diagnostics AzureCanvasBackend: direct2d 1.1 AzureCanvasBackend (UI Process): skia AzureContentBackend: skia AzureContentBackend (UI Process): skia AzureFallbackCanvasBackend (UI Process): skia CMSOutputProfile: 10144 bytes, too large Display0: 1600x900@60Hz : Intel(R) HD Graphics DisplayCount: 1 HardwareStretching: both=0 window-only=0 full-screen-only=0 none=0 error=1 GPUProcessPid: 108 ClearType Parameters: Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 400 Decision Log HW_COMPOSITING: available by default D3D11_COMPOSITING: available by default DIRECT2D: available by default D3D11_HW_ANGLE: available by default GPU_PROCESS: available by default WEBRENDER: available by default disabled by env: Not qualified WEBRENDER_QUALIFIED: available by default denied by env: Not on allowlist WEBRENDER_COMPOSITOR: available by default unavailable by runtime: No DirectComposition usage WEBRENDER_PARTIAL: available by default WEBRENDER_SHADER_CACHE: available by default unavailable by runtime: WebRender disabled WEBRENDER_OPTIMIZED_SHADERS: available by default unavailable by runtime: WebRender disabled WEBRENDER_ANGLE: available by default WEBRENDER_DCOMP_PRESENT: available by default unavailable by env: Requires Windows 10 or later unavailable by runtime: Requires WebRender WEBRENDER_SOFTWARE: available by default OMTP: disabled by default: Disabled by default broken by runtime: OMTP is not supported with <= 2 cores WEBGPU: disabled by default: Disabled by default blocked by runtime: WebGPU can only be enabled in nightly

Sorry, that doesn't look like it copied from the start. Here's the previous bits:

Application Basics

Name: Firefox Version: 90.0.2 Build ID: 20210721174149 Distribution ID: Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0 OS: Windows_NT 6.1 7601 Launcher Process: Enabled Multiprocess Windows: 1/1 Fission Windows: 0/1 Disabled by default Remote Processes: 9 Enterprise Policies: Inactive Google Location Service Key: Found Google Safebrowsing Key: Found Mozilla Location Service Key: Found Safe Mode: false

Crash Reports for the Last 3 Days

Firefox Features

Name: DoH Roll-Out Version: 2.0.0 ID: doh-rollout@mozilla.org

Name: Firefox Screenshots Version: 39.0.1 ID: screenshots@mozilla.org

Name: Form Autofill Version: 1.0.1 ID: formautofill@mozilla.org

Name: Picture-In-Picture Version: 1.0.0 ID: pictureinpicture@mozilla.org

Name: Reset Search Defaults Version: 2.1.0 ID: reset-search-defaults@mozilla.com

Name: Web Compatibility Interventions Version: 23.1.0 ID: webcompat@mozilla.org

Name: WebCompat Reporter Version: 1.4.2 ID: webcompat-reporter@mozilla.org

Remote Features

bug-1680034-rollout-shirley-feature-roll-out-81-to-83-release-81-83: active rollout-increasing-normandy-skew-out-changes-from-15-m-release-73-75-bug-1616898: active rollout-monitor-v2-1505837: active rollout-webrender-release-67-1541488: active

Remote Processes

Type: Web Content Count: 5 / 8

Type: Privileged About Count: 1

Type: Extension Count: 1

Type: Preallocated Count: 1

Type: GPU Count: 1

Add-ons

Name: British English Dictionary (Marco Pinto) Type: dictionary Version: 2.99 Enabled: true ID: marcoagpinto@mail.telepac.pt

Name: Amazon.co.uk Type: extension Version: 1.9 Enabled: true ID: amazon@search.mozilla.org

Name: Amazon.com Type: extension Version: 1.3 Enabled: true ID: amazondotcom@search.mozilla.org

Name: Bing Type: extension Version: 1.3 Enabled: true ID: bing@search.mozilla.org

Name: Chambers (UK) Type: extension Version: 1.0 Enabled: true ID: chambers-en-GB@search.mozilla.org

Name: DuckDuckGo Type: extension Version: 1.1 Enabled: true ID: ddg@search.mozilla.org

Name: eBay Type: extension Version: 1.3 Enabled: true ID: ebay@search.mozilla.org

Name: Google Type: extension Version: 1.1 Enabled: true ID: google@search.mozilla.org

Name: Wikipedia (en) Type: extension Version: 1.1 Enabled: true ID: wikipedia@search.mozilla.org

Name: English (GB) Language Pack Type: locale Version: 90.0buildid20210721174149 Enabled: true ID: langpack-en-GB@firefox.mozilla.org

Use these links to create a new profile. Use this new profile as is. Is the problem still there?

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Type about:profiles<enter> in the address bar.

Is there a way to save and restore profiles? I am testing some software at the moment and don't want to risk unexpected changes.

P.S. It still happens in 91.0

I created a new profile, called Test, and launched it in a separate browser session. The reported problem is identical in that session.

Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

Starting Any Computer In Safe Mode (web link) Free Online Encyclopedia

https://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/

https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10/ +++++++++++++++++++++++++++++++++++++++++++++++ If the problem goes away with the computer in Safe Mode, the problem is with one of the other programs on the system.

As a test, disable your protection programs.

Sorry, been working hard and so not had time to try this. However, I have noticed some consistency:

Facebook does it a lot. Blogger's post summary page does it less often. Neocities dashboard rarely does it (had to minimize/restore window about 5 times to force it).

However, a simple page that I have under development, currently with just a div frame centered in the window, and displaying a single line of text, seems to do it every time.

Worse still, the suggestion that a mouse-move event over the body of the window causes it to redraw doesn't always work. Sometimes it causes a partial redraw and sometimes it takes a good few movements, but moving the mouse over the browser menus or tab controls always causes a successful redraw.

Not sure if this information is of any help.

I called for more help.

I have had to switch my default browser as this has become quite serious for me. While trying to conduct transactions on secure pages then I found myself clicking on "ghost buttons": ones that aren't really there but it was not obvious that the page was only half updated. There was a very scary moment when I accidentally clicked on a real button that I absolutely did not want to click on.

As a note for anyone tasked with investigating this, I found that the problem has another very reproducible and annoying symptom: any tooltips (or "hover text") are never dismissed, leading to "ghost tooltips" hanging around until I can force an update.

I am now on 94.0.1 (64-bit) but there has been no change from when I first reported this issue.