After that the said button in the window it happened in is unresponsive to left click and looks as when it was clicked without opening it's menu. That issue doesn't disappear when in safe mode and even on a separate firefox downloaded from the official source, so some dependency is the cause. I did have the unstable repo added at the time of the issue. Currently reverting such.

The command with which i am restoring it is:
sudo eopkg install --reinstall --repository SolusShannon $(eopkg list-installed | grep -o "^\S\+")
Note that i renamed the stable repo and it might need changes for you

Harvey I have not reinstalled all packages from unstable when i added it so that might be the cause.
But i did update since then. I suppose eopkg history might help. Sadly it's too chonky to upload so i'll await suggestions for sending it.

    Finished reinstalling all the packages from stable branch, the issue persisted. The reboot didn't help.

    Link me a guide in error reporting and i will follow it. The "General Troubleshooting" doesn't count.

    If it is a new issue but still persists after reverting the updates from unstable, and there are no broken packages then my only guess is the Firefox profile is screwed up as I still have not been able to reproduce. In which case backup and delete ~/.mozilla/firefox/ and relaunch see if it persists. Note this would delete settings/bookmarks/history/saved passwords etc for firefox so make sure you backup if you care about that.

    I have used the "Refresh Firefox" button before so we'll see if it's different. Will test without even signing into it.

    It still had that issue. And i suppose that it's not a new issue and rather happened for a weak. I did search for it on the forum. Didn't find similar issue in 40 first.

    10 days later

    The issue hid somewhere in the ~/.config folder and dissapeared as i've quite obliviously removed it. You don't need to explain to me that it causes all the settings to restore to defaults, but a less destructive way must exist.

    It happened for me once yesterday i think. And it was Firefox flatpak version iirc. I couldn't click on the tabs, like the app was frozen. It was okay after Firefox restart.