All playlists showing on all platforms regardless of where they are parented to

[hodgegoulashi]

I apologize if this has been covered or is obvious. I've read many posts all day and haven't found my issue. I also did a screen recording to help land what I'm seeing. I will link that below. 

What I'm trying to accomplish:

I want to have a Flycast platform with all Naomi, Naomi 2, and Atomiswave roms in it. While in that platform in Big Box, I want to bring up playlists and select Naomi, Naomi 2, and Atomiswave to narrow things down to each platform via the playlist. I only want to see those three playlists from the Flycast platform.

What is happening:

I started on this by creating a Flycast category and Flycast platform. Under the platform, I have a Sammy Atomiswave playlist set to only parent to the Flycast platform. For some reason, this playlist shows under all platform categories and platforms. I also ran into an issue where my Arcade/Mame auto-generated playlists only parented to Mame show up under the Flycast platform. All playlists always show up regardless of how the parent is set. Is it possible to only show specific playlists for certain platforms? If so, what am I doing wrong? I have tried playing with the parent toggles in every way possible and always see all the playlists in Big Box.

Screen recording: https://www.loom.com/share/f7e02177c6f5420d968634d08d77c722?sid=09507c70-28f9-4ad4-bf18-defbd25a916e