I've deleted this poll today and made a new post with the results.
However, a group member answered to the poll topic and obviously the topic with the #poll hashtag was recreated.
Thinking that it could solve the problem I merged the new topic into the one that the user had replied to.
Now, I have indeed only one topic, but every reply to this topic is coming with the "#poll" attached at the end of the subject.
The worst part is that editing the subject I can't see the "#poll" part so that I can remove it.
So, how could I remove it from the subject once and for all?

Thanks a lot and? sorry if this doesn't make sense at first glance.

Cheers,
AKA Starboy

Sent from a galaxy far, far away.