I think Hobbs fixed it earlier
Same thing was happening with Ranged/Mage before being re-attacked, where the shot fired input would cancel or not load, if the incoming attack was already loading.
Teemu noticed this too
Same thing where it didn't accept new inputs simultaneously
But the server is brokenly laggy today in particular it seems, even for north americans, not sure if we're being ddos'd or it has something to do with Hobbs working on server