Not sure how you guys would want to fix this but it's kind of annoying, my friends steam name is two names with a space in between (name name) and another is all together (name1233) I can whisper to the person with the name all together but not the one with the space because of how the text reads w/Name Name compared to w/Name1233.

No yea I tried both, at first I just used the player symbol and it would pop up on the chat with the whisper command but whatever I typed it it would say that the player was invalid. I tried typing it it manually, even without the space and it still did the same. The only thing I could think of is that the command doesn't know to put the name together for Name Name and since it's just taking the first name it's registered as invalid.