ainola [1] filed a deletion request for gnome-shell-tweener-fix [2]:
Some years out of date, and it appears the upstream bugs have been fixed.
[1] https://aur.archlinux.org/account/ainola/ [2] https://aur.archlinux.org/pkgbase/gnome-shell-tweener-fix/
Request #24403 has been accepted by Muflone [1].
aur-requests@lists.archlinux.org