Philm did not post information about Xfce not supporting Gtk4 in Known issues and solutions
When Stable Update 2023-07-10 was first posted it did not include this information. I re-posted information from Testing update 2023-06-24 on the day after release announcement, when I noticed it had not been copied across
Changes to pamac-gtk were notified better on testing branch than stable so it was not a major problem for me, except for being ‘blinded by the light’ for a 2nd time