I was using it fine prior to the last two Firefox updates, but now it has become almost impossible to use. I can use Edge at the same time and Edge works fine with DB. I use DB with several bank accounts, which involves my refreshing each account in a separate process on the DB site. Sometimes Firefox just stops, sometimes it refreshes properly, sometimes it leaves the account refresh buttons off the page.

It should be the work of a few minutes to get all of my accounts refreshed and accurate, but now using Firefox it can take numerous attempts and can take over an hour.