So if you will try to select file, for example: “Material_1” - all will work correctly
But if you will select to load file with name something like this: “Material 1”
You will see nothing loaded:
Also auto-detection not allways auto-select other files of material
I will say this is a good bug for compatibility’s sake 
A lot of (old) programs have issue with spaces in filenames, and especially using more obscure, command line tools, this can be an issue. A common practice is to use a dash or an underscore instead.
Nonetheless, best user experience would be a warning instead of a bug.
