• VSCode Version:1.9.1
• OS Version: windows 7

Steps to Reproduce:
Don't know how to reproduce this consistently.

I can be editing along and want to go to a folder in the Explorer on the left.
I hit the folder name with the mouse. The caret changes from pointing right to pointing down, but the subfolder do not open. (see the 2 attached files, open and closed).

Click on folder. It is still closed, but now looks like this:

If I reload the folder and hit refresh, it seems to work