Thanks for the info! I'm currently re-indexing the mentions again and this will be fixed in the coming days ;)
Edit:
I've transferred the new logic for mentions detection to my server yesterday and from now on there should be no more issues with your account name. The old mentions will be removed when the re-indexing process is finished.
Edit2:
Also with my new logic you are mentioned in the post from tanjit and after some searching I came to the conclusion that it is correct, because the user really mentioned you but he edited the post later:
