We recently upgraded to apex 21.2.3 and this version is overriding the color class specified for icons in classic reports (Media List templates), or similar region types as lists:
In the classic report query, if you specify the column ICON_COLOR_CLASS with value "u-color-9-bg", it ignores it. It seems that the t-MediaList-icon class is overriding specified icon_color_class.
It doesn't matter if you check the template options "Use theme colors" or not. If you check "Use theme colors", it overrides the icon color with random colors. And if you uncheck it, it just shows the gray icon without colors ignoring specified css class "u-color-9-bg". Any ideas what I'm missing? Is this a bug or changed behaviour of this version? How can I fix this?

We also noticed that file browser items don't support filtering types with wildcards properly, for example document/* doesn't work, and */pdf also doesn't work.