firefox adding letters to master password
i have set up a master password, which get prompted when I start Firefox, but when I type in the password Firefox adds 4 characters before my typed characters. These 4 characters do not show up in the password box. If you enter a blank box - four dots appear. So I spend ages trying to get my password logged correctly. By this time Firefox brings up a no connection error message! I have tried changing the password but this has no effect. I seem to recall Firefox doing this a while back but it was sorted by next update. Any advise would be gratefully recieved as it driving me nuts now!
Additional System Details
- Shockwave Flash 32.0 r0
- User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0
https://support.mozilla.org/en-US/kb/update-firefox-latest-version?cache=no Did you update Firefox to the latest version 65.0.2 February 28, 2019