Without dbus-update-activation-environment, xdg-desktop-portal-{gtk,wlr}
inherit an empty WAYLAND_DISPLAY/SWAYSOCK from the session bus (started
by dbus-run-session before sway) and crash on activation. As a result
Flatpak apps cannot read color-scheme / gtk-theme from the host and fall
back to a light theme.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>