Are you using any password add-ons/programs?

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

No.

Here is the link that fails.

https://secure.bankofamerica.com/login/sign-in/signOnV2Screen.go?reason=eccdocuments&source=home_stmt&documentId=202005692020050311590035511330010070&popupFlag=y&mestatement=3853&channel=desktop&cm_mmc=OLB-Alerts-_-email-_-O124LT000E_email_HL_STMT-_-ecchl&version=7.2.0&screen=EStatements:Home&estatement=3853IML&documentReceivedDate=05032020

https://support.mozilla.org/kb/Clear+Recent+History#w_how-do-i-remove-a-single-website-from-my-history

Remove History For One Site

Open the History Manager <Control><Shift> H. In the search bar, enter the name of the site. Right-click on one of the listings and select Forget About This Site. This should remove all information, including any settings.

Hi: I do not keep history so there is nothing to delete. Sorry. Thanks for the suggestion anyway.

If you have a bookmark of that website, you can use that.