(In reply to Guillaume Maudoux [:layus] from comment #5) > I guess it relates to https://gitlab.gnome.org/GNOME/gtk/issues/1896. You're right, that's it. We may adda a workaround on Firefox side to trim maximal GtkWindow size here, the widget log from comment 7 should help me to diagnose it better.
Bug 1575474 Comment 8 Edit History
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(In reply to Guillaume Maudoux [:layus] from comment #5) > I guess it relates to https://gitlab.gnome.org/GNOME/gtk/issues/1896. You're right, that's it. We may add a workaround on Firefox side to trim maximal GtkWindow size here, the widget log from comment 7 should help me to diagnose it better.