While browsing this topic found that OIT enabled in WEBGPU causes problems.
Topic link:OIT & Z-Offset for transparent objects - #10 by antl
PG:https://playground.babylonjs.com/#YGWH0X#19
Since Depth Bias does not affect line and point primitives. · Issue #4729 · gpuweb/gpuweb · GitHub has been merged in the spec, it’s now an error to set a depth bias with LINE and POINT topologies. This PR will fix the problem in Babylon:
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Thank you for your work.