A320 Issue - Popup Not Working

[paulmc]

Hi

 

Iam new to the forum and need a little help. When popping out the panels on the A320Neo onto another monitor the Primary flight display wont popout. All the other panels do.

Ive searched high and low and changed nothing within the configuration.

Any Help would be really good as Iam at the stage Iam pulling out whats left of my hair 

 

Thanks