Hi junkrapataustin, what troubleshooting steps have you tried so far?

If a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally:

Double-check content blockers: Firefox's Tracking Protection feature and extensions that counter ads and tracking may break websites that weren't built to operate normally without the blocked components.

Do you see a shield icon toward the left end of the address bar, near the lock icon? More info on managing the Tracking Protection feature in this article: What happened to Tracking Protection?.

Extensions such as Adblock Plus, Blur, Disconnect, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix should provide toolbar buttons to manage blocked content in a page. There may or may not be a number on the icon indicating the number of blocked items; you may need to click the button to see what's going on and test whether you need to make an exception for this site.

Cache and Cookies: When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either:

• right-click (on Mac Ctrl+click) a blank area of the page and choose View Page Info > Security > "Clear Cookies and Site Data"
• (menu bar) Tools > Page Info > Security > "Clear Cookies and Site Data"
• click the padlock or "i" icon in the address bar, then the ">" button, then More Information, and finally the "Clear Cookies and Site Data" button

In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites.

Then try reloading the page. Does that help?

Testing in Firefox's Safe Mode: In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.)

If Firefox is running: You can restart Firefox in Safe Mode using either:

• "3-bar" menu button > "?" Help > Restart with Add-ons Disabled
• (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

Hi junkrapataustin, when you said it is your gate access system, if you are the developer or have access to modify the system, could you check one or both of Firefox's consoles for errors:

• Tab-specific console: https://developer.mozilla.org/docs/Tools/Web_Console
• Global console: https://developer.mozilla.org/docs/Tools/Browser_Console

For example, you can open the Web Console in the lower part of the tab using either:

• "3-bar" menu button > Web Developer > Web Console
• (menu bar) Tools > Web Developer > Web Console
• (Windows) Ctrl+Shift+k

Then reload the page in the upper part of the tab and watch for error or security messages. Anything that sounds like it could be relevant?

Then try using the form and check for any further messages.

I am not the developer. I did go through the suggestions from your first Email and still a problem. Firefox was working fine with this system on Friday (10/26/18) and after update on Monday (10/29/18) this one section will not allow anything to be entered. All keystrokes result in no movement of the cursor or that keys letter/number. This is a database with different sections for entry of specific data. All other sections are working correctly... At least I haven't found another section that is blocked. See screen shot (Card Number section blocked) Again Chrome works fine with this database.

Can you submit a support request to the developer to see whether they are familiar with this issue and have a solution?

Similar issue on a different site with a numeric field (unsolved): unable to enter numeric digits on some websites.

My speculation there was:

"It's possible the non-working form fields have a validation script that has stopped working in Firefox 63 for some reason. However, it is difficult for an end user to test that theory because if you completely disable JavaScript on the site, that will probably break a lot of other things. Hopefully the site will look into it."

can you check in about:config that dom.window.event.enabled is set to false?

It is set to false.