Why can Firefox never auto-fill my username/password on a Lemmy login page?

Now we all know your password is ••••••••

idk why but I have to click around back and forth between the username and password box on ironfox android to get keepass autofill to work sometimes

can't imagine this information is helpful at all and idk where to submit bug report. ironfox? lemmy? keepass? gos? is it related to my addons?