Buttons in Response view With wrong functionality

Hi,

i have installed the latest 5.2.2 template.
If I want to moderate a topic or want to use as normal user the forum Buttons below a topic there is a wrong Funktion behind the Buttons. Only on responsiv view.

If i click edit the thread is deleted. The Button delete is without a Function.

Anybody Else has the same?

Is it important that i am using a german Frontend?