Got some news back from the tech....
this is what he said:
I've been looking into this and it seems like with the case of JM not tagging because the minimum username length is set to 3 so because of this DBTech is set in a way where it ignores anything that is under that limit. You can change that in the admin cp-> vbOptions-> User Registration Options-> Minimum Username Length
I believe the same thing is happening for The U NBEARABLE LIGHTNESS OF BEING THE SHIV seeing how the max username setting is set to 18 characters.