Sway: Sway doesn't send wl_pointer.enter after switching back from a tty.

[johanhelsing]

• Sway Version: sway version 1.0-beta.2 (Nov 30 2018, branch 'master')
• Debug Log: sway.log
• Configuration File: default
• Wayland log: client.log

Start sway, start a Qt application (probably with others as well), switch to a tty, switch back, press mouse button.

So from client.log, this is is what seems to be happening:

1. Sway reports capability keyboard only, which causes Qt to release the pointer object.
2. Then capability with pointer is reported again, and Qt calls get_pointer
3. wl_pointer.button is sent for the new pointer object without sending wl_pointer.enter first.
4. Qt application crashes (https://bugreports.qt.io/browse/QTBUG-72235)

[emersion]

We should rebase the cursor after updating capabilities.

We should also make sure wlroots sends enter on bind if necessary.

[Ferdi265]

Current status on my system, with sway version 1.1-rc1-3-g9dca18b6 (May 7 2019, branch 'master'):

After switching back from a tty:

• Qt applications are unresponsive to keyboard input until keyboard focus changes to another window and back
• Qt applications are unresponsive to mouse input until mouse leaves and reenters window
• GTK applications on wayland and all Xwayland applications (Qt, GTK, or other) don't exhibit this behaviour

[frangio]

Is this an issue with wlroots? Any pointers where one should look if attempting to fix it?