I've been playing with custom tile images and I noticed this inconsistency.

• Start11 1.31 + Windows 10 21H2 (LTSC 2021) + 4K display set to 200% DPI scaling
• Start11 has shortcut icon size set to "Large" in Start Menu → Configuration (though this inconsistency is present at least with the "Medium" size as well)

The specific issue is that icons in the left column of a "group" are one pixel more narrow than the rest.  Here I have a group of four.  The first one is 247×248 pixels, and the rest are 248×248.  (You can open the image in an editor and measure it.)  I'm reporting here "width × height".

Using custom tiles isn't necessary to observe this.

Happens with different tile sizes too:

This issue is consistent across all of the tile groups that I have checked.  I have not tried it with DPI scaling levels other than 200%.  I did check the "Medium" shortcut icon size and it is similar, with the first tile being 199×200 and the others being 200×200.

Just wondering if there is a specific reason for this?  If not, I'd ask if you could make the tile size consistent?

[Edit]

Did some additional checking and it looks like Start11 is chopping off the left column of pixels for the "shrunk" tiles on the left side of a group.

I made this 248×248 image with just the left column red, and the rest yellow.

If it is not on the left edge, it shows up correctly in Start11.

(zoomed)

But if you move that tile to the left side, the red line is no longer visible.

(zoomed, red pixel column is missing?)