That was a classic own-goal; some time ago I educated the Brave browser with a terminal command so that it automatically starts with a private window.
This works quite well, unfortunately it has some side effects. For example I can’t open a normal window/tab anymore. The access to the settings is not possible and so on.
I couldn’t find anything in the package content of Brave. The command was something with the parameter ‘incognito’ at the end, maybe?
I have already reset Brave to the state before this change via Time-Machine, but it didn’t work.
I’d like to have Brave with all its features.
Brave Version: doesn’t work as well.