Hey, it was hard to pinpoint an exact category for this. This small issue happens in development (most likely use case), but it’s not the studio’s or the engine’s issue - it has to do with what’s retrieved from the Roblox website using Players:GetUserThumbnailAsync().
The HeadShot type is fine, centered, but the body thumbnail types, like the AvatarBust and the Avatar (full body), are not centered correctly.
If I try to change from my centered placeholder avatar image to those from Roblox, it causes misalignment and unaesthetic look.
Let me demonstrate this visually so you can better see the issue it causes.
On the website, let’s open up any avatar’s thumbnail image. Then, if you look very closely (preferably, with the eyes squinting, jk), you can clearly see that it’s slightly off-center:
Let me be more clear with a video from the Studio, with the thumbnail in action.
I manually downloaded and centered the same avatar thumbnail to illustrate the contrast better, how it shifts from the centered position, when using the Roblox’s official version.
Disclaimer: the following bug demonstration video may be funny, watch at your own risk. 
The video was very fun to make.
Couldn’t hold myself from humor, but I still tried to demonstrate the bug visually as simply as possible.
P.S. OCD checks out (jk).
Expected behavior
The center is the goal. 
