Diagonal rendering artifacts on sprites and textures in Exynos 2500 device

I’m experiencing some weird rendering artifacts. In a Exynos based device.

I got this report from a user with a Galaxy Z Flip smf766u1

The game is built using webgl1 and engine ver v1.77

Some UI sprites have a strange diagonal artifact, where the upper-left part of the image appears corrupted. I’m also seeing the same issue on some textures applied to 3D objects. For example, half of the table texture appears corrupted.

In both cases, with sprites and 3D textures, the artifact is split along a diagonal line.

We tested the game in PC, Apple Silicon, iphone, ipad and snapdragon based android phones and it looks fine in all of them. The problem only occurs so far in Exynos 2500 based devices.

Any ideas what could be causing this?

Thanks

Start by reproducing the diagonal artifacts on an Exynos 2500 Galaxy Z Flip using WebGL1 and engine v1.77. Compare sprite and 3D texture rendering with the listed PC, Apple, iPhone, iPad, and Snapdragon devices, then narrow the issue to a reproducible rendering failure and document what confirms it is resolved.