If you add a TreeTableView into a SplitPane. Then add a TableView into the same SplitPane.

Now click on a cell in the TableView. Try to go left or right (with keyboard left and right arrow), you will see that it's not responding. But going up or down is working. And if you remove the TreeTableView from the SplitPane, OR if you add the TableView first, it's working perfectly!

So this is a really weird behavior. I've investigated a bit and I think it might come from the static list of KeyBinding in their BehaviorBase. I just can't figure out why it is just left and right selection not working. This is a mystery.

Any lead?

Sample to run : http://pastebin.com/8cHR0818