Select Sampled Colour whole marquee selection shifts 150px up and left when Apply clicked

[Artworkzzz]

I have several large files (yoga mat scale) where whenever I use 'Select Sampled Colour', the whole selection shifts up by around 150 px and left the same amount.  Tried on both different files with the same result.  Had to manually move the whole selection to continue my work.

From the screenshots you can see that once the Apply button is clicked, the whole selection has shifted. The doc is 1830mm x 680mm with a 20mm bleed all around @ 192ppi. RGB/8.

I just made the enclosed tester file, same scale with a simple scribble and the same thing happens.

select pixel persona in Publisher

select pixel layer in layer palette

Select/Select Sampled Colour

Apply.

 

 

tester for Affinity.afpub

[carl123]

23 minutes ago, Artworkzzz said:

The doc is 1830mm x 680mm with a 20mm bleed all around @ 192ppi. RGB/8.

I think it's a known issue when bleed is added

Switch off the bleed and try again to see if it works

[Artworkzzz]

I have tried with bleed removed and indeed the problem goes away.  Thank you.