What are you referring to when you talk about the “Unreal Source gameplay-ability-system channel”?
I’d love to read the details.
I’m encountering the same problem with the 5.4.1 built from source, and tried to integrate the latest source code change on the github 5.4 branch (there’s basically a single commit after the 5.4.1 release which is this one), but I still get the warning when playing from PIE in client-dedi server configuration…
Any precision on the exact commit that should have fixed the issue?