BUG - tooltip freeze, program crash in table editor

If you are using the keyboard to add columns to a table, and you TAB out of the Datatype input while the tooltip is displayed, sometimes it gets frozen on the screen:

http://i.imgur.com/q3jZzo2.png

You cannot close it in any way, and you can even edit the contents. You can sometimes still save the table without an error. But then just trying to close the program will result in crash.

Happened 3 times today on r5055 and then r5059.

It's actually not just with keyboard shortcuts, just selecting a data type with the mouse resulted in the tooltip freeze/crash in r5059.