I have the same problem! The google search bar works in a private window and other search engines but not in a normal firefox window.

I can confirm uninstalling and reinstalling didn't fix it, I also cleared my cache and did every troubleshooting thing I could think of but it didn't change anything

Edit: Do you have the AdBlocker Ultimate extension by any chance? I just turned mine off and enter is working with the google search bar as it should be! (Consequently it was also the reason my youtube video's weren't playing)

Making a new response so you hopefully see it:

Do you have the AdBlocker Ultimate extension by any chance? I just turned mine off and enter is working with the google search bar as it should be! (Consequently it was also the reason my youtube video's weren't playing)

Yes i did, just tried to remove it, and it works, THANKS my man.

Having the same issue. Started between 8/4 and 8/5/2023. Also confirmed it's AdBlocker Ultimate that is causing the issue with some website functionality. AdBlocker Ultimate DOES work in Chrome. Works as normal with Extension Disabled in Firefox.

I also got the same problem and confirm it's ad block ultimate. it is also making me not rendering page/video properly.

I confirm this too - AdBlocker Ultimate is a root cause. Many other web pages (e-shops, strava, YT,..) are not working properly either. The FF version I have now is: 116.0.1 (64-bit), AdBlocker Version: 3.7.28. Last update of filters were done on Last update: 5th August, 1:30 (probably local time GMT+2).

Browsing net without AdBlocker is pain, hopefully guys will fix that soon.

This is also happening with uBlock Origin ad blocker. Really frustrating.

Edit: It could be a filter issue?

I resolved it by disabling the "Absolute Mode" of the Firefox plugins "Absolute Enable Right Click & Copy" as picture attached. Thanks.