Presentation pink edge

Hey there, I got a question about the presentation. When I open the normal presentation mode a pink edge appears around the layout. How can I change the colour or make it go away? I couldn´t find a way. It’s really annoying. Thanks in advance! Regards T.

Hello @Thekla_Streck, could you please send a screenshot of the issue so I can better help?

If you could share a link to the presentation, that would be helpful as well.