Version:           unspecified (using Devel) 
OS:                Linux

When clicking on the clock or a system tray icons that has an extender, clicking it, opens it and the sliding out extender is over the panel instead of being truncated at the panel. This thing is acceptable, yes, but the extender disappears before the extender is completely slided back into the panel which makes it ugly.

Reproducible: Always

Steps to Reproduce:
Click the clock, battery widget, whatever that has an extender

Actual Results:  
The extender slides out and the extender is over the panel and slided out in its entirety.

Expected Results:  
The extender "emits" from the panel border and does not "cover it up".

Either truncate the extender at the panel border (like before) or have it visible until it is slided out entirely and not inbetween which is the situation at the moment and looks bad as the extender just disappears halfway sliding in/out