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7f996c589e
Gtk 3's Adwaita CSS (compiled into libgtk-3 as a GResource) draws
GtkSpinner via -gtk-icontheme("process-working-symbolic"). Recent
adwaita-icon-theme releases (Fedora 43 ships 49) dropped that icon,
and linuxdeploy-plugin-gtk doesn't bundle icon themes — it only
extends XDG_DATA_DIRS to /usr/share so lookups fall through to the
host. On Fedora hosts the lookup fails: the spinner widget occupies
its CSS min-size but shows no visible content. Sidebar service
reloads and Preferences dialogs both looked frozen even though the
underlying operation was progressing.
Add adwaita-icon-theme to apt and copy /usr/share/icons/Adwaita into
$APPDIR/usr/share/icons/Adwaita. Since AppRun places $APPDIR/usr/share
before /usr/share in XDG_DATA_DIRS, GTK finds the bundled Noble copy
(which still has the icon) before the host's newer, trimmed one.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>