Hi Tobias
Thank you for your help. It was exacly as you predicted a plugin that caused the trouble.
You solved it even though i was disconnected before i was finish with the “post”
Bonus info: It actually worked fine in windows. Only on mac,iphone and ipad I got the problem (safari and google crome app.)
The plugin in question is WP Super Cache.
I made a post on their support site.
Again, thank you for your help