[Bug 35361] Multiple Steam games crash on keypress with in-game community overlay enabled

http://bugs.winehq.org/show_bug.cgi?id=35361

--- Comment #30 from Stefan Dösinger  ---
The "bad" context is set by another process (GameOverlayUI.exe) than it is read
(hl2.exe, or whatever the game is). This can't work with the current code.

I guess this either needs proper handles or tests that show that setting an imm
context on a window owned by another process is not valid.