You need to file a ticket for this. Since you can't talk about people that potentially have you blocked, you need to speak with a UA in private about this matter.

But it also may be that the page (who has Sorcerer blocked) is also inaccurate. That is why I think a ticket would be better.

I know this report is super old, but I thought I'd post an update just so there is an update here. The block message was changed to "This is a user who has blocked you or a user you have blocked" and this change was made on April 8, 2019. So this issue is resolved. :)