Hmm, I'm not aware of a Firefox setting for the size the mouse pointer icon/graphic (or whatever that arrow should be called).

Do you use an extremely high resolution display?

Hmm, I'm not aware of a Firefox setting for the size the mouse pointer icon/graphic (or whatever that arrow should be called). Do you use an extremely high resolution display?

I use a 27" 2560 x 1440 Monitor

And the problem is also in the firefox windows like here: https://i.imgur.com/htoqi5r.png

I haven't seen this before. I assume it is somehow related to resolution, but your resolution isn't too extreme, so there must be some other factor.

Could you test whether this problem also exists in the beta of Firefox 89? The safest way to check that is to install the Firefox Developer Edition alongside your regular Firefox. See: https://www.mozilla.org/firefox/developer/

I haven't seen this before. I assume it is somehow related to resolution, but your resolution isn't too extreme, so there must be some other factor. Could you test whether this problem also exists in the beta of Firefox 89? The safest way to check that is to install the Firefox Developer Edition alongside your regular Firefox. See: https://www.mozilla.org/firefox/developer/

Okay, it works in the dev version: https://i.imgur.com/1tPit8d.png

seek the mouse settings in win 10 to resize the mouse.

maybe under accessibility control panel?

seek the mouse settings in win 10 to resize the mouse. maybe under accessibility control panel?

Resizing the cursor there actually solved the problem!!! Thank you so much! Didnt even know such a setting exists

We are glad to help !

seek the mouse settings in win 10 to resize the mouse. maybe under accessibility control panel?

That only helps with a few cursors/pointers. Firefox appears to use it's own, user-hostile, pointers for things like the image plus/minus magnification. These impossible-to-differentiate pointers do not change with the windows settings. Plus the windows-enlarged text brackets make it much harder to precision-select text.

Does increasing layout.css.devPixelsPerPx has any effect ?

You can set layout.css.devPixelsPerPx to 1.0 (default is -1) on the about:config page. Adjust its value in 0.1 or 0.05 steps (1.1 to enlarge or 0.9 to reduce) until icons or text looks right. Make sure not to use values too large or too small.

• modifying layout.css.devPixelsPerPx affects user interface and webpages (global zoom)

Firefox has a Zoom section in Settings to set the default zoom level for webpages.

• Settings -> General -> Language and Appearance -> Zoom

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

• https://support.mozilla.org/en-US/kb/about-config-editor-firefox

Does increasing layout.css.devPixelsPerPx has any effect ? You can set layout.css.devPixelsPerPx to 1.0 (default is -1) on the about:config page. Adjust its value in 0.1 or 0.05 steps (1.1 to enlarge or 0.9 to reduce) until icons or text looks right. Make sure not to use values too large or too small.

• modifying layout.css.devPixelsPerPx affects user interface and webpages (global zoom)

Firefox has a Zoom section in Settings to set the default zoom level for webpages.

• Settings -> General -> Language and Appearance -> Zoom

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

• https://support.mozilla.org/en-US/kb/about-config-editor-firefox

This didnt change anything I still have to manually open the windows settings, change the size there to any size, open firefox with that large cursor click in firefox, and scale it back Then it works

You can try to clear the startup cache via the "Help -> More Troubleshooting Information" (about:support) page.

• https://support.mozilla.org/en-US/kb/use-troubleshooting-information-page-fix-firefox

You can try to clear the startup cache via the "Help -> More Troubleshooting Information" (about:support) page.

• https://support.mozilla.org/en-US/kb/use-troubleshooting-information-page-fix-firefox

Also didnt help