http://bugs.winehq.org/show_bug.cgi?id=31702
--- Comment #9 from Samuel Nelson valczir.darkvein@gmail.com 2012-09-18 08:28:22 CDT --- (In reply to comment #8)
I don't think this is a rawinput related bug.
In fullscreen mode we see this "every other time" issue, in a vdesktop we see it every time, and in windowed we don't see it at all.
Additionally, pressing keys (A full keypress not a keydown or keyup, in between camera movements) will "Reset" the counter allowing you to deliberately maintain a "Streak" of sorts.
I believe the game is somehow losing focus every other time.
You're right, I'm seeing similar behavior. Although, pressing keyboard keys doesn't reset anything for me; pressing a mouse key seems to, as you said, sort of reset the counter - as if I had released and pressed the right mouse button.
Windowed works every time, as you said - but it's strange that windowed fullscreen (or just maximizing the windowed mode) goes back to the same behavior as standard fullscreen.
The entire behavior is very strange. I'm not so sure that the game is losing focus - whenever anything loses focus in my window manager, it also loses the ability to receive events, and GW2 definitely still receives key presses.
That said, it needs more testing. I'll try to remember to work on it after work tonight (I'm busy, lately).