Firefox

I have enabled the option to delete browser data when closing the app because I prefer to restart with a fresh clean slate. This worked for me for a long time, however recently I noticed that it doesn't erase all the data anymore. I close the app, it shows the clearing message and when I reopen the app I have several issues.

These are things that don't work as expected:

• all logins (without auto log off from the server side) are still active. I don't store my passwords or anything, so there should be still the respective session cookies around.
• entered formular data is still around. When I open a website where I have entered text in a form it is still there. This does not happen everywhere e.g. not with search bars but with some enter username forms, so I believe it depends on the settings of the respective website
• sometimes when reopening the app the section of the starting page showing the previous visited websites still shows the history for about a second and then gets cleared. This even happens if I have turned off my phone in between, so I don't think it's just because everything still was in the RAM. However this one is the most random of the issues. I cannot reproduce it on purpose.

Any ideas on how I fix this without clearing the entire app cache manually after every use? The first one worries me the most because where is the point in not storing pwds when it stores the session anyway.