http://bugs.winehq.org/show_bug.cgi?id=27156
--- Comment #63 from Valeriy Malov jazzvoid@gmail.com 2011-06-05 16:00:38 CDT --- I think that exclusive mouse grab would work only if you know when to activate it, e.g. when you're writing your own game or fullscreen app.
Did some more tests.
Team Fortress 2 (Source game) and Lost Coast (another Source game) with wine 1.3.21 + patched xorg seem to work flawlessly, like in pre-Xi2 wine (no mouse jumps making you look at the ground)
AvP2 with wine 1.3.21 + patched xorg: broken, like in pre-Xi2 wine, aim spins at will on any mouse events.
AvP2 with 1.3.16 + old (Vitaliy's?) Xi2 patch and patched xorg-server: mouse works flawlessly, game warps it with no problem in-game and does not warp it in the menu.
Half-Life 2: Lost Coast (Source game) with 1.3.16 + old Xi2 patch and patched xorg-server: broken, aim is "quantized" (small jumps instead of smooth movement).