Ardaleia found out where this bug comes from and posted it here.
In summary:
- This is the standard profanity filter of the Xbox Live network that you pretty much have to sign into to play on the ladder.
- Two of the things that trigger the filter are the letter i and the number 1, either standing alone or part of a word. If the letter i or the number 1 is found the whole message or name it is a part of will be censored. This includes the names of any player 1, and any sentence including the letter i, like “I’ll go scouts” or “Missed me”.
- You can’t disable this filter or set it to a lower setting unless you have an Xbox. It cannot be changed from any PC.
- You cannot call and have Microsoft disable this filter or lower the setting because that is a violation of your privacy.
- Yes, that is a super badly designed system.