[Wayland-bugs] [Bug 93583] Cannot use multiple finger tapping to perform middle click

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93583

--- Comment #7 from Peter Hutterer <peter.hutterer at who-t.net> ---
Hit the button too early.

What happens is that the second touch doesn't have x/y values and is thus at
0/0. That gives the TRIPLETAP fake touch a position of 0/0 as well, triggering
palm detection for either. But we sync the slot state at startup, so any real
device should be correct here (that's what the printf can confirm).

The palm detection causes it to fake a motion event, which changes the state
from a pending multifinger tap to a "fingers holding on the touchpad" which
won't trigger the button presses.

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