This is a bug or what ? :]
When navigating one of the trees begin to happen strange things.
Expanding and collapsing part of the first panel action is executed on the second. Items disappear from the second tree and duplicate the first.
I've also encountered this problem and there are additional strange behaviors like auto-scrolling doesn't work in the second tree and both trees will suddenly stop expanding and collapsing nodes. In my case, the trees are on a menu invoked from a button. Has the bug been targeted for a release? Is there a workaround?
Why was this thread marked as fixed? I experience the same problem (using ExtJS 4.0.7)! Collapsing & Expanding causes the items in "Exclusion masks" jump to the upper tree. Also when I change checkboxes in the upper tree, the changes are reflected in items of the lower tree instead of the upper one. 2trees1store.jpg