Current shadow cascade rendering in LWRP doesn't cull objects that are fully in closer cascades and don't need to be rendered again, this is due to the cull results not ignoring objects already covered in previous cascades.

Repo steps:
1. Load attached project
2. Load frame debugger, notice three draws under 'Shadows.RenderJobDir'
3. Assign the LWRP asset in the project to graphics settings
4. Load frame debugger

Expected result: Shadow draws should be the same
Actual result: Sphere is rendered in both near and far cascades

Repoed in 2018.3.0a6 LWRP 3.1.0