CC Hair Keeps Changing to Base Game Hair When Switching to Other Sim in CAS

Hello!

I was trying to make some sims today, and decided to use a specific CC hair I had downloaded on one of them as I thought it was perfect, but every time I try to look at one of the other sims in the household in Create a Sim, his hair randomly switches to one from the base game, every single time. ...It also keeps making his hair red, and if I reselect the CC hair, it won't let me make it blonde again unless I select a different hair, make that blonde and then select the CC hair I want. Is there any way to make it stop doing this, and stay as the initial hair I'm selecting?

I'm not sure what's causing this, although I did recently take that custom content and make it available for sims with the feminine frame instead of just the masculine one (couldn't get the sim to look exactly right with the masculine frame), although I'm not sure why that might cause an issue like this, this is the only CC I'm having this problem with, and it started after that. I've included a video of what it's doing in case the visual could help anyone?