Jagged/Flickering Edges In URP WebGL

Hi All, Please see the below images.

I have a tiled ground, Unity cubes that are separated from each other with a bit of space in-between each of them (no textures just color). I am using the URP and it's standard shader. In Unity 2019.4.3f1 the edges do have some minor issues at shallow angles but are much better than in 2021.2.8f1. Does anyone know why the edges might be flickering more in 2021.2.8f1 for WebGL builds. I have not changed any of my settings between the two versions. The brightness also seems to have changed between the two versions. I have tried changing around Anisotropic Textures in Quality settings and Anti Aliasing settings in the URP Renderer Asset but no luck.

2021.2.8f1 WebGL


2019.4.3f1 WebGL

 

2021.2 has an active bug where MSAA is not applied.
https://issuetracker.unity3d.com/issues/webgl-msaa-effect-is-not-applied-in-build

 

Ah great find. That could very well be my issue! I will keep an eye on it.

As a work around for now I ended up removing the individual tiles, put one big ground plane in and used a tile texture on it bumped up to ansio lvl 16.