marco-theme-viewer TraditionalOk show several artefacts

[joakim-tjernlund]

Expected behaviour

No missing/artifacts

Actual behaviour

There is the "missing icon" in top left corner,
Fake menu has black blobs and no text

several MATE themes has these artefacts

Steps to reproduce the behaviour

marco-theme-viewer TraditionalOk

MATE general version

MATE 1.22.2 ,

Package version

mate-themes-3.22.20
marco-1.22.2

Linux Distribution

Gentoo

Link to downstream report of your Distribution

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[joakim-tjernlund]

Just tried: marco-theme-viewer Adwaita
and got:
Error loading theme: Failed to find a valid file for theme Adwaita

This seems to depend on no metacity-1 folder in Adwaita, is this the expected behaviour?

[joakim-tjernlund]

Ping?
I can see these artifacts on any Traditional theme(Any theme that has missing icon in upper right corner.