FYI, when a website erases your text that you just spent an hour writing, you can use this little trick to recover it 99% of the time:
1. find the firefox pid
$ pgrep -l firefox
2. attach gdb to firefox and dump its core
$ sudo gdb <pid>
gcore firefox.dump
<this takes awhile>
quit
<firefox dies>
3. find your lost text in the coredump
$ strings firefox.dump | grep "a unique word/sentence from ur text"
i just did this today to recover a long post i wrote, and figured i'd show others!! :uxn:
@j3s
$ sudo gdb -p <pid>
and it works for me
Linux Manjaro