I apologize, I found my problem. Though my class defaults were set to not be hit testable, in the blueprints themselves, I was setting the visibility to “Visible.”
Changing the blueprint logic to set visibility to “not hit-testable” solved the problem.
Once again, I apologize for posting a question I solved shortly afterwards. I swear I don’t post here unless I’ve been stumped for at least a number of hours. It just always seems I figure it out shortly after coming here.