It shows it for me (below). But did you notice that the folders aren't mixed in with the pictures in the Picture folder. They appears in a list on the left as shown.
If you're not seeing that, try restoring your InDesign preferences and/or your Bridge preferences. For InDesign use this method:
For Bridge, quit out of the application. Launch it, and hold down Cmd + Shift + Option immediately after launch until you're asked to restore preferences.