Hi, please explain locked in ? When you are signed into a site and right click to open another tab some sites will keep you logged in, others will have you logged out so that is site specific. It is of no use to diagnose a issue.

Please Copy/Paste about:preferences#privacy to the Address Bar then Enter. Under Heading of History make sure things are Checked that you want like Remember History.

Please let us know if this solved your issue or if need further assistance.

Make sure you do not run Firefox in permanent Private Browsing mode (Always use Private Browsing mode; Never Remember History).

• https://support.mozilla.org/en-US/kb/private-browsing-use-firefox-without-history

• Options/Preferences -> Privacy & Security -> Firefox will: "Use custom settings for history"
• remove checkmark: [ ] "Always use Private Browsing mode"

Are you using container tabs?

• https://support.mozilla.org/en-US/kb/containers

Hi,

no Private Mode and no Container :(

The same Site in IE / EDGE / older Firefox open the Tab with the same Session LockedIn Credentials.

Only got this issue with the new Firefox Version

rorescanin,

Have you taken a look at your Firefox settings? Under "Options" --> "Privacy & Security", you'll see "History".

Check to ensure Firefox is set to "Remember History".

Your browser may have been configured to "Never remember history", and will not maintain a history of the websites you've visited.

The option to "Never remember history" will also prevent the website from storing a cookie on your computer which would tell each tab that you've already logged in.