Some icons appear blurry when viewed at higher resolution

[Wokarol]

What did I do?

I called --set-icon to add an icon to an exe file.
Both icons had total of 6 sizes. Ranging from 16x16 to 256x256.
One of the icons was created using an online generator, the other was created using ImageMagick.

Two files appear to be the same.

Expected behaviour:

Both files should yield the same result when set onto an .exe file

Actual behaviour:

The file created using online generator appeared blurry once viewed in resolution above 48x48 (47 was fine, 50 was not)

What tests did I do?

I checked both files using XnView and they both looked the same and had the same amount of sizes in them.
When opened using Visual Studio, the order in which the sizes appear is different. Descending for the correct file, ascending for the incorrect one

Here are the files I've used

icons.zip