At least the #zap all clients should show the same number.
I understand that some clients avoid it, but in the future it will confuse more than one.
Discussion
I don’t expect all apps to show precisely the same way since there may be some feature differences they are trying to achieve but if not everyone is seeing some core things the same way, that seems fairly problematic in my opinion.
Correct, the counting functionality of #zap should match all clients. If at any time we want Only zap replace the likes.