Where did the section/folder pics go?

Hey guys, sorry if this is a dumbass question. I'm currently prodding about with SM5 themes to fit my kind of obnoxious aesthetic, and in doing so have noticed that, while banners and jackets show up just fine for individual songs, the banners and jackets representing each individual folder aren't appearing in select music. I had a look at other themes to compare and noticed that banners did show up in the default theme and older SM5 themes, but weren't being read in more (relatively) recent ones. Is there any way I can fix this via .lua or .ini files?

Also I apologize, I'm a clueless newbie when it comes to coding but I'm trying my best!

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