Assume there is a Toolbar with a splitButton that has a subItem. Both the splitButton and the subItem have clickHandlers configured. As long as the splitButton is not in the toolbar's overflow, everything is working correctly. However, when overflown, clicking on the subItem executes the clickHandler of the splitButton instead of the clickHandler of the subItem.
This behavior can be reproduced in the following DOJO: https://dojo.telerik.com/enanUKan/3. Watch the console output when clicking the splitButton/its subItem.
Two more hints:
Unfortunately, both options are no viable solution for us. Any suggestions?