This happens when two meshes have close position in the scene, and close Render Queue.
The easiest way to fix the problem is to select a different shader in Tileset / Materials & Shaders / Drawing Shader, such as TilesetDrawingElementZOffset or TilesetDrawingElementZTestAlways.

another question, since this saved me so much effort last time. I'm drawing a route with this example (https://infinity-code.com/atlas/online- … ample.html), but on mobile devices the rendering seems to have some clipping issues.
The route appears clipped differently depending on the zoom level; changing the polyline's width didn't make any difference.
Any ideas on what to change? Already tried removing the scene's lighting, didn't make any difference.
In any case it's relevant, I'm rendering using URP. I'm displaying my map as a tileset on UI Canvas (maybe that's the issue?) The problem occurs on ALL four Android devices I've tested on so far.

Unfortunately nobody else seems to have come across this problem, I couldn't find any related posts in this forum.

Thanks in advance, your help is greatly appreciated.