We've just migrated a 3.5 application to Qooxdoo 4.0 and we've found
a behavior change in selections that affects the way interaction
occurs in that application.
In 3.5, both in trees and tables (and everywhere I suppose), the
selection of the item is done in the MouseDown event while in 4.0 is
done when the Mouse button is released (MouseUp / PointerUp or Click
/ Tap). I've seen that handleMouseDown() and handleMouseUp() methods
in the manager class have been replaced by a single handleTap()
method, but I still do not find the way to get it working like it
did in 3.5 (I got it partially, but then multi-selections got
PS: I've applied the patch (bug #8434), that was the only related
bug I could find.
You can just view what I am talking about in the showcase: