configuration: MacMini M1 - BigSur 11.7.2 - Affinity Photo 2.0.4
when importing an TIF or PDF image (as a scale in 1x1 %steps from 0 to 100%) the INFO SAMPLER shows wrong percentages values (see attached files).
Exporting the same image file (as TIF or PDF) from PhotoV2 and opening it on another image software, the percentages are okay in the file.
The attached screenshots show a scale made in 1x1 % steps: in the original file step#1 is = 1%, steps#2 is = 2%, ... step#10 is = 10%, ... step#100 is = 100%.
Once the image is imported in PhotoV2, the result is that step#1 is = 1%, step#2 is = 1%, step#3 is = 3%, step#4 is = 3%, step#5 is = 5%, and so on.
This issue is related to all color channels C, M, Y, K and always in the same way/percentages for all color combinations (C+M, M+Y, C+Y, C+M+Y, etc..).
It seems to be only a matter of how the PhotoV2 preview interprets the data.
In the printing industry it is very important to get precise percentages values.