Created attachment 5193 
Screen capture of a sadly unsuccessful attemp of shrinking Thunar window when folder with a very long name is open

First of all, a folder with a long name is needed. Say, for instance:

"Personam tragicam forte vulpes viderat; quam postquam huc illuc semel atque iterum verterat, O quanta species -inquit- cerebrum non habet.  Hoc illis dictum est quibus honorem et gloriam Fortuna tribuit, sensum communem abstulit."

Now I open Thunar and navigate to my home folder and resize the window to make it as narrow as possible. I make sure the "Path bar style" is activated in the menu*:

View -> Location bar -> Path bar style 

and open the folder with the long name. Thunar window is horizontally resized so that the whole folder name fits in the "Path bar". This is, well, acceptable. Unfortunately, the folder name is so long that the window becomes wider than the screen resolution. And this is a big mess, because it can not be shrinked back. Furthermore, if I go back to the Home folder (ALT + LEFT arrow // ALT + UP arrow), the Home folder cannot be resized either. I must open another folder with a short name, and then I can resize properly.

Suggestion: cutting the name of the folder in the "Path bar" to fit the window size would be better than resizing the window to the folder name.

Thanks for your work!