Hi,
i created a test file to compare how alpha blends in different situations, especially "color opacity vs layer opacity".
The file
contains 16 tiles
4 "large" tiles showing
top: vector shapes,
bottom: fill layers,
left: raw,
right: copy of left rasterized & tim
4 "small" tiles, showing left:
red left color opacity / layer opacity : 50 / 100,
right 100 / 50
blue top 50 / 100,
bottom 100 / 50
As visible, the fill layer blend result differs from vector blend result, and rasterized layers blend results (bottom left corner)
I strongly assume a bug with fill layers alpha blending - except someone from Affinity can provide a good explanation in layman's terms (or exact math formula)
color vs layer opacity vector vs fill bug.afphoto