Hi,
While running your changed tests on Windows, I think I found new failures. Being a bot and all I'm not very good at pattern recognition, so I might be wrong, but could you please double-check? Full results can be found at https://testbot.winehq.org/JobDetails.pl?Key=22828
Your paranoid android.
=== wvistau64 (64 bit win) === win.c:8154: Test failed: transparent window didn't get WM_NCHITTEST message win.c:8155: Test failed: button under static window didn't get WM_LBUTTONUP