Yes. ~/.mozilla. Its annoying.

You can fix it with a hack by putting a shell script in your path (before the original firefox) that consist of:

#!/bin/sh

HOME='/home/engywuck/.local/share/firefox' /usr/bin/firefox

Call that instead of the original firefox from now on. it will create the “librewolf” folder in ~/.local/share and chuck its junk in there.

Edit: This bug has been open for TWENTY YEARS.

Honestly ridiculous.