Turn whatever content blocker you're using off and then turn it back on. I had to do that with Crystal back in the developer beta 1. It's been fine since in beta 2 and 3.
I don't know if it's still the case (sounds like you have multiple content blockers running?) but isn't it better to just run one and not have a bunch running, conflicting with each other.
Hmm, should have tried this before I made this thread, but I had to uninstall and reinstall to get them working again.
Interestingly enough, this didn't work on my iPhone, but it did on my iPad Pro.
Anyone have any suggestions as to why it worked on one and not the other?