How to fix the width of the foldertree window panel when switching styles?

When I switch from Explorer style to Images, the folder tree window panel resizes and is therefore covering somewhat longer folder names.
How to avoid that?
I set the width of the folder tree window panel to what I think appropriate, that width should stick, until I resize it again.
Maybe it is simple, but I couldn't find the setting for this (it at all it exists).

Thanks

Load the style. Resize the tree. Save the style.