Of course I, and perhaps most of us, were used to Windows File Explorer but didn't like many of its features and switched to another file manager, like Multi Commander. But there still are a few Windows File Explorer features that I am used to and like. One is its lack of a horizontal scroll bar on the tree panel.
I took that for granted before switching to Multi Commander. The tree stayed put instead of bouncing left and right when you didn't want it to. If it was too narrow for a particular situation (that didn't happen very often) it was a simple process to just drag it a little wider, even if only temporarily.
The best of both worlds would be to be able to turn the scroll bar on and off according to one's preferences.