https://bugs.winehq.org/show_bug.cgi?id=55902
--- Comment #6 from alexandros.frantzis@collabora.com --- (In reply to darkblaze69 from comment #5)
On Xwayland in GNOME the double-tap on headerbar works for me to maximize, and the cursor doesn't change to drag when double-tap on headerbar.
Is this with the GNOME Xwayland headerbar (i.e., server side), or with the Wine (i.e., client side, when "Allow the window manager to decorate the windows" is *not* ticked in winecfg) headerbar? In my experiments, I can reproduce with the Wine headerbar on both Xwayland and Wayland.
Thank you for the GNOME bug link, this seems to be the same issue, with the move event after the first tap somehow confusing GNOME. I have not seen an explanation why this is seen with touchpad taps but not mouse clicks though.
The discussion in the bug about this needing to be fixed in applications is somewhat reasonable. However, this is also causing a regression in Xwayland vs X11, so a GNOME fix would also be reasonable, especially when factoring in that this works in other compositors and with mouse clicks.