V98.0.2 Phantom Keystrokes

[SirBillybones]

After updating to 98.0.2, Firefox starts registering Down Arrow key with no physical input. This issue only occurs in Firefox, but will persist for a short time in Windows after closing/minimizing/unfocusing Firefox.

I've done the following troubleshooting steps:

1. Uninstalled all keyboard devices in Device Manager and restarted
2. Uninstalled Logitech GHub
3. Unplugged the Keyboard
4. Started Firefox in Safe Mode
5. Scanned with Malwarebytes + Windows Defender
6. Refresh/Reinstall Firefox
7. Ran System File Checker

Any suggestions are greatly appreciated, this issue has made the browser practically unusable. Typing this out has been challenging.

[SirBillybones]

To update, Opera has the same issue, but Edge doesn't. Perhaps I have a corrupted Driver after-all.

[SirBillybones]

Found the issue is caused by a separate input device I failed to check, oops.