LastPass in Windows Firefox won't let me log into my online banking for some reason

Question

For about the last month and a half, every time I try to log into my credit union's online banking site in Firefox (Windows 11) the page never resolves after login to something usable. When I started Firefox in safe mode (no add-ons/extensions) the page worked. So I started the browser up, disabled all add-ons but LastPass, closed the browser, opened it again, tried to log into the online banking site and boom, the problem is back.

This is a heck of a thing. I'm a premium user, do I submit a formal ticket here or what?

papageno · Answer

Thanks for taking a look at it. You mention autofill : the thing is, as far as I can tell the credentials are autofilled --- as I mentioned by default they're autofilled already when I open the login page, but for some reason, unless I disable the Add-on in Firefox, the resulting page after I hit the login button never resolves to something useful.

LastPass Support · Answer

Hi @kaportland​& @papageno​

I believe we've identified the problem and will work to improve the autofill behavior there.

papageno · Answer

Yep, that's my my CU as well. I don't want to switch to Chrome so my workaround is that I have to disable LastPass before logging in, once the password field is full, before I hit the login button. I haven't had the problem with any other site using Firefox plus LastPass.