events, mouse button 2 possible bug?

[Julian Bradfield]

For the button press, I see just

window 102760448, BUTTON_PRESS Button 2 modifier 0 (411,82)
window 102760448, BUTTON_RELEASE Button 2 modifier 512 (411,82)

as expected.

For debugging events, I sometimes find it useful to fire up an Xvnc
with no clients except the one I'm debugging, so I know there's
nothing else looking at events.