wayland/xdg-shell: Implement support for xdg_toplevel.wm_capabilities#780
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mtwebster merged 1 commit intolinuxmint:masterfrom Feb 6, 2026
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Nothing dynamic yet, we don't have API for this, but we need it to implement the next version. Sending "all" should be equivalent to v4 anyhow, so this is harmless. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3019>
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GTK4 since version 4.20 checks if minimize or maximize is supported by the compositor, and disables the window buttons if not:
https://gitlab.gnome.org/GNOME/gtk/-/commit/d73871c670c6aafd24f923cd98ccd559d7e9e14e
Mutter since version 45 reports these capabilities as supported:
https://gitlab.gnome.org/GNOME/mutter/-/commit/3af02e1b57f90145e0a843195d8a96dc2a36e16b
Applying the same commit for Muffin fixes the problem that the minimize and maximize buttons are disabled on Wayland:
linuxmint/wayland#153