Roblox resizes my original 1000x1000 image to 420x420 when I upload the image to a gamepass icon.
Roblox resizes my original 1000x1000 image to 420x380 causing it to look stretched when I upload the image to a gamepass icon.
The behavior does not change even if I resize the image to 420x420 before I upload it to the gamepass icon.
This issue started April 18th 2023 according to this post in Help and Feedback: Gamepass images stretched
Upload an image for any gamepass icon. I was able to figure out that it was incorrectly resized by opening the gamepass image in new tab when it was uploaded.