Now I have the icons on the Folder Tabs enabled.
I like that look.

But when I have a tab set to "Locked, but directory change allowed",
the icon changes and sometimes disappears, whenever I change the folder.
I would appretiate two new settings:
• optional: if the custom folder icon is not defined, use the default basic folder icon on the tab
• optional: do not change the icon at all when the folder tab is locked and the directory is changed