KDE4 apps blink?

[Richard L. Hamilton]

As a temporary measure, I downloaded a prebuilt MacVim.app from Macupdate.  It works, but the window _blinks_.

Same with the kshisen app that I got built once I followed a suggestion how to get libkdegames built.

They're not even using the same copy of the Qt/KDE libraries, since the downloaded MacVim.app must have bundled all its own.

WTF?

This is about as freaky as mpv having blank windows.