Gamertag changes

According to the recent gamertag changes I tried to change using the new system and received "Tag is not allowed". I would consider that the system has found something offensive in my pseudo and I would be ok with it, but I am able to claim the same tag with the old one, moreover I use no abuse words (or at least I don't know any context in which "vaillant" can be considered such one). Are there some changes to the validation logic? About a month ago I have reported this behaviour directly to the support, but don't see any changes or notifications on this field.

As for user (btw programmer), it seems just a bit weird

submitted by /u/msvaillant
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