I haven't used Webcore since I moved to HE from ST, so no idea if that's normal for it, or if there any clues about it's behavior that might help. You might want to ask on the Webcore topic here:
You said the only recent change was:
That should not blow things up...
You migrated to the C8-Pro, or built the mesh from scratch?
Pinging @bertabcd1234 to see if he has any insights...