Ok, forget about this issue: I was logged in in one browser as admin. Admin seems to be able to select best answer. If scenario is played with two non-admin users, the scenario works fine! This is ok for me!

Thats weird.. are you using old AnsPress theme overrides ? please check and remove old overrides. As 2.0 theme system has been coded from scratch.

Yes you are right, 3em is added by jQuery plugin. Will fix it.

Will check and let you know, its rewrite issue. Please try saving your permalink once.

Will check and let you know

You’are guys really supportive and helping me a lot. Thank you very much!

Janob, This was a bug. I fixed it please download from github and deactivate AnsPress and again activate it. this will solve your issue.

Issue has been solved

I contact you on your email 🙂

Already fixed and pushed 😉