RibbonComboBox MouseLeave Event doesnt fire

I cant get mouseleave to fire inside a ribboncombobox inside a ribboncontrolgroup inside ribbon tab insi开发者_如何学Cde a ribbon.

I have a behavior that on mouse enter opens the dropdown and should close it on mouseleave except mouseleave doesnt fire I verified this using snoop and by setting a breakpoint on the event.

Any ideas or workarounds?

I was having a similiar issue with the border control - and I found an event called, "IsMouseDirectlyOverChanged" - that seemed to fire pretty regularily so I used that.