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#1: Initial revision
Given the explanation you were given elsewhere, this behavior is exactly what I would expect and doesn't strike me as a bug. No one claimed to have "deleted" your account on those communities. They only claimed to disassociate existing content from your account. So it's not surprising that you can still use your account.
I'm sure you can request your account be additionally banned from those communities, but you could also just not interact with those communities if you don't want to anymore (which is presumably why you wanted your account deleted).