App icons in folder when pinned don't disappear from the folder thumbnail
Originally reported this to favorites-in-app-grid extension but looks like this is not an extension issue. harshadgavali/favourites-in-appgrid#7 (comment 2062749)
Basically, if you pin an app in an app folder then it disappears from the folder as expected but the thumbnail of the app folder still contains the icon until the folder contents are rearranged / changed.
Whatever is happening here, its affecting both the favorites-in-app-grid extension as well as dynamic-calendar-and-click-icons extension https://github.com/fcusr/dynamic-calendar-and-clocks-icons/issues/12 and I guess maybe others that deal with changing or adding / removing app icons from the grid when doing so to an app inside a folder.
Maybe signals not connected to update the app folder thumbnail when apps inside it change ?