Same here. Firefox 130.0.
I have the same issue. Windows 10 22H2, Firefox 130.0, Bitwarden 2024.8.2.
I noticed that if I restart the browser, somehow the extension begins to function normally.
I hope it will be fixed soon!
Interestingly for me, I have FF 130, bitwarden 2024.9.0 on mac os 12.7.6 and it works.
Yet, for any other browser: Opera, Chrome, Brave with bitwarden 2024.9.0 i get that red-boxed notification unable to auto-fill.
@Gerald_Davenport wrote it already - but explicitly expressed: Firefox extension 2024.9.0 arrived and is ready to be updated. Whether it really solves the auto-fill problem for everyone, I don’t know.
2024.9.0 solved it for me. Thanks for the quick solution.
Apparently, the upgrade to version 2024.9.0 solved the issue. I will come back with an update if I encounter any issues.
Thank you!
Version 2024.9.0 doesn’t work for me on Brave, Edge, or Chrome.
Unfortunately, the issue is still present. It worked when the add-on was updated, as soon as I restarted the browser, the issue is still there.
For me, the workaround is, still, the restart of the browser.
It worked for a few days on Firefox 130 and Bitwarden 2024.8.2 and this morning doesn’t work anymore. I’m on Firefox 130.0.1 and Bitwarden 2024.9.0, so it seems both were updated.
Downgraded to 2024.8.2 and it works again. So version 2024.9.0 is broken on the newest Firefox.
2024.8.x seems to be having those issues as well.
Here is an explanation from a developer about what might be going on:
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Maybe the act of installing a downgraded version triggered the same behavior as disabling and re-enabling it 
I’ll try again with 2024.9.0
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I just want to mention I had the exact same issues: auto-fill suddenly stopped working. Running Bitwarden in Firefox on Linux. I installed Bitwarden when the context menu to select your autofill account wasn’t implemented yet, so I only relied on Ctrl+Shift+L.
I read @DarkStar’s comment and reinstalled Bitwarden. This fixed it! Version 2024.9.1 BTW.
My version of BitWarden suddenly stopped autofilling a few days ago. Am currently running v. 2024.9.1. My Firefox version is 115.16.0esr which I just updated to today. Previous version was possibly 115.13.0. Also noting over the last few days that BW is starting to log itself off again like what happened a month or so ago. Not as much, but it is happening.
Bitwarden (2024.9.0) on Firefox (130.0.1) under Linux Mint 21 stopped Auto-filling on many sites a day or so ago. These are sites that I’ve used with Bitwarden for some years without any difficulty. Thankfully Auto-fill using Google Chrome (129.0.6668.70 ) still works OK. This problem is making it very tiresome to carry out my charity work.
The developer said this has been fixed, and the fixed release would be put to the app stores’ approval process by mid month.