My entire team runs into this in 5.2 it’s debilitating. I build exclusively from the editor, but my teammates don’t always. None of us use the Live Coder, but we’re often times in different editor builds (i.e. Debug Game vs Development Editor).
Maybe github’s merge conflict auto-resolve could be at fault? Sometimes that destroys blueprints.
I’ve noticed reparenting blueprints or recreating them entirely is a temporary work around, but eventually things break again.
For us the parent’s components are all fine, but its children aren’t. It’s usually one or two components that break, everything else is fine.