[copy an paste selection not work]

Rasterize solved the problem. Thanks.

[copy an paste selection not work]

I try to copy and paste a selection, but I fail. What I do:

 

start safari 

copy this image of neuschwanstein to clipboard https://de.wikipedia.org/wiki/Datei:Schloss_Neuschwanstein_2013.jpg

open affinity photo

close start dialog

select file, new from clipboard

make a rectangle selection around a tower

cmd+c

cmd+v

 

What i want to see is a copy of the rectangle selection. But Affinity Photo duplicates the layer including the whole image. What do I wrong?