Computer Help and Support

I think your browser needs a hard reset. Just a guess.
Check parts of those articles that address the browser.

There are bits of history and saved data that are in your "profile" (home directory, whatever your system) that would come back even if you reinstalled the browser. So, do what you can to clear all history and data and even maybe extensions.

Yeah, I had a tiring day, myself.

I'll bet that if you installed another browser, just for fun, it would not have the problem, and there's your Sherlock clue.

Good luck.