[WEB-2702] Some usernames are mistakenly blocked by swear filter

Mojang Studios Note

Our profile name system for Minecraft: Java Edition is suffering from the Scunthorpe problem. This means that if you attempt to change to a profile name which in part (i.e. a substring) contains a set of characters that we have blocked, the name change/claim will be rejected. We block certain character combinations to prevent vulgar or offensive profile names. In some cases a name change might not have this intent, in which case our system produces false positives.

There is no workaround for this situation, you will unfortunately have to pick a different name. We might look into more advanced systems in place down the road, however this is not something we have yet committed to.

Some names that should be able to be claimed are mistakenly blocked by Mojang's swear filter. Usernames that are not really what would be considered inappropriate get blocked because they have parts of blocked terms in them. A couple examples I found are the usernames "trapezoid" and "grasshopper." In both usernames, the swear filter for usernames is tripped, with a four letter word (didn't post because it's explicit) being the trigger in "trapezoid," and "assho" being the trigger in "grasshopper." This also works for similar names, like "trapezoid4392" and "Grasshopper813." The swear filter should be fixed such that players are able to claim these names and other similar names, as these are just examples and this applies in a lot of cases.