[External display on Mac iMac problems]

Hi Dan, 

Thanks a lot for your very quick reply! Yes, you're perfectly spot on, it works well now!

Thanks a lot for your help!

 

Best, Nico

[External display on Mac iMac problems]

Hello, 

I'm just starting to use Affinity photo. I have a strange problem: After editing very lightly a picture (3-4 steps) the image starts to disappear displaying only a cropped part of the image on the upper left corner, the rest is the checked working space background. I can fill the screen only if I slide the zoom to 150% and use the navigator. 

I'm using an iMac with an Eizo screen, see screen grabs below. 

Any ideas how to make this problem disappear?

 

Many thanks for your reply!

 

Nico