http://bugs.winehq.org/show_bug.cgi?id=25200
--- Comment #8 from Jarek jarekczek@poczta.onet.pl 2011-05-27 14:48:30 CDT --- Looks like the delay comes from bitmap drawing.
EditPad has menus with bitmaps. The menus roll down slowly like 1 second for a menu with 20 items. But there are menus where only 3 items are bitmapped and the rest is very textual. The textual menus pop up quickly.
And there is also a menu with configurable tools, where every item has the same icon. That doesn't help, the menu still pops up slowly.
If only I could write a small win32 app drawing many icons... It would be easy track down the issue.