I can confirm this happens. I’d assume the template isn’t properly updated for the bezeled avatar edges.
A way to reproduce would be making a shirt/pants template where everything that should be part of the avatar (as shown by the current template) is one colour, and everything outside of that is another colour (brighter colours are more obvious). Even if you make 100% certain it’s a png with zero bleeding, and upload it as such, you will see that the edges of the player will have the colours from the template bleeding in when it shouldn’t be there (due to what I assume is a combination of incorrectly mapped meshes and poorly compressed images being used)
Edit: An example I have from a while ago. On my template image as part of my watermark a while ago, I put a rainbow border around the body parts (on the background area) and uploaded a few clothes with it. It’s most noticable on this shirt here. Those orange/green/blue lines around the parts are outside of what should be displayed, according to the current shirt template, but still appear on the avatar anyway.
While this isn’t too much of an issue with a grey border (it somewhat blends in to the shadows and lines of the avatar) it still is a big annoyance.