TableView is a strange beast, with WRI being very secretive about it. As far as I know it came in the open because it was used somewhere in a presentation of a WRI employee and its revelation was probably unintended. It is known to be rather crash-prone, so its use should not be advocated too much (though I personally would love to have such a feature once stable).
The question I have is whether or not the bugs tag should be reserved for bugs in the official, documented function set or that bugs in undocumented functions qualify as well.
I'll provide a few answers for voting. Feel free to add your own.