Hello,
the Find Panel has a Button (arrow) that will allow the user to minimize it without closing it (thus not losing the state of the Find Panel).
I sometimes find myself wanting to minimize the Folder Tree, but as this is not possible I have to close it, which causes loss of the expansion state of the tree.
Would it be possible to add such a "minimize Folder Tree" button, that would essentially be an arrow showing to the border of the side where folder tree is located, minimizing it to a slim vertical column in analogy to what happens to Find Panel horizontally?
(Please like if you think this would be helpful for you too 
)