Expanding and collapsing nodes in Ext.tree.Panel is broken as of 5.0.1. This simple fiddle which is nothing but the class documentation sample for Ext.tree.Panel shows the problem. Click the "homework" node, then expand and collapse the node using left and right arrow keys. In 5.0.1, keypresses are ignored after the first keypress, but in 5.0.0 you can expand and collapse any number of times (as well as navigate up and down).

Run this fiddle in 5.0.1 and compare to 5.0.0:


http://ift.tt/1ulRbQ3