Assigning Media Source to TV doesn't work

In the Media Sources tab of a TV it says "Here you can assign the Media Sources that are to be used for this TV in each specified Context. Double-click on the Source name in the grid to change it."

I can see my contexts but no sources are listed. Am I missing a step? I have tried this on 3 installs and none of them show up. See attached screen.

You have to double-click on the empty field to get the Media Sources drop-down to show.

Ok thanks for that but there's still a few bugs. The description says to Double-click on the Source name in the grid to change it but there is no source name shown so I would have to guess and click around and stumble upon what you mentioned. Secondly it doesn't actually save properly until you choose filesystem, save then choose a different media source and save, so that's buggy.

Finally when I actually went to the TV on a resource the name of the media source was incorrect. It shows the correct folders but the name in the dropdown is wrong and that could confuse clients. You can see these points in a very short screen capture I made - http://bridgecourt.com/video/Modx2.2PL-MediaSources-TV.wmv.

This is most likely related to this bug: http://bugs.modx.com/issues/6397 Try another browser to see if the behaviour persists.

I have seen this issue of not being able to see a TV's assigned media source for a given context in both Chrome 17 and FF 3.6.x as of today.
Thank you, Tom