Missing Thumbnails in Cinnamon Theme Selection Menus

[mfreeman72]

When used with the Cinnamon DE (I'm not sure if this is an issue with others), some of the thumbnails are missing in the theme selection menus. The Cinnamon panel thumbnail is there, and is present in the cinnamon folder inside the theme's install folder, but the window border thumbnail is missing from the metacity-1 folder and the "Window Borders" selection menu, and the buttons/controls thumbnail is missing from the gtk-3.x folders and the "Controls" selection menu. This makes it difficult to preview the themes before activating them, and just looks bad in the menus.

[sumutcan]

I can confirm this on LM 20 and manjaro cinnamon.

[Mennaruuk]

Third this. It doesn't look pleasant, however, the themes still work when you apply them. Hope this can be fixed in a future release.

[junglized]

Same thing in Linux Mint 22 Cinnamon. This theme hasn't been updated for ages which is a shame really because it's a very good looking theme.