Option to auto collapse bookmark folders in sidebar.

[RandPC]

It would be nice to have the option for folders to automatically close once I open a bookmark within one of those folders instead of having to close them manually every time.

[maximwaldow]

@RandPC
+1
Just wanted to post this as I've discovered your post.
There was an old Firefox extension called "Autoclose Bookmarks Folders".
I don't get it why exhausting double clicks are necessary.
I work from the bookmarks side panel which is always open. As I read a lot of stuff it's tedious to double click all the time.