Sub-folders not displaying in Directory Picker

i noticed in the F2 new-project wizard, that when you click on a folder in the directory picker, things kind-of lock up and wait forever, never showing the sub-folders to choose. then if you click OK, and re-enter the picker, you can select sub-folders again normally, then it locks again and you have to repeat.
9:00 any ideas about that?

YouTube video showing the problem - https://www.youtube.com/watch?v=skhbUz37ZPU