Picker cursor disappears outside of window in Ubuntu 24.10 on Wayland using the Snap

[vescovaccio]

Picker cursor disappears outside of window in Ubuntu 24.10 on Wayland, making it impossible to pick a color on the screen. The picker doesn't seem to work either inside or outside of the window. The other features seem to work, just not the picker cursor.

[gen2brain]

This is all about Wayland support, so perhaps just one issue should be open/renamed as "Wayland support", etc. See #25.