Steps to reproduce:
1. Open user's attached project "Be_Hero.zip"
2. Zoom out in the Scene view
3. LWRP shader artifacts appear on Tilemaps in Scene view

Expected results: graphical shader artifacts do not appear in the Scene view
Actual results: graphical shader artifacts appear in the Scene view on Tilemaps

Reproduced with: LWRP 7.1.5 (2019.3.0b4), LWRP 7.1.7 (2019.3.0f4, 2020.1.0a18)
Not reproducible with: LWRP 6.9.2 (2019.2.17f1), LWRP 7.0.1 (2019.3.0b3)
Could not test with 2017.4 and 2018.4 due to package errors in the console

Notes:
-Reproducible always on macOS, doesn't often reproduce on Windows 10
-Issue persists when using URP shaders as well
-Disabling the "Grid" GameObject under "Maps" in the Hierarchy window and enabling it again solves the issue
-After restarting Unity the issue is gone, however project must be unpacked again to reproduce
-User has reported that Unity crashes after disabling the "Grid" GameObject, but couldn't reproduce

Crash stacktrace:
0x00007FF7091E9692 (Unity) TransformVerticesInnerLoop<0,1,0>
0x00007FF70920AC91 (Unity) TransformVerticesStridedREF
0x00007FF707F92534 (Unity) TransformVertices
0x00007FF709DF9AC4 (Unity) TilemapRendererJobs::TilemapRendererGeometryJob::Execute
0x00007FF70925998D (Unity) JobQueue::Exec
0x00007FF70925A0ED (Unity) JobQueue::ExecuteJobFromHighPriorityStack
0x00007FF70925BC43 (Unity) JobQueue::ProcessJobs
0x00007FF709260FC6 (Unity) JobQueue::WorkLoop
0x00007FF7097AAFF3 (Unity) Thread::RunThreadWrapper
0x00007FFF669A7BD4 (KERNEL32) BaseThreadInitThunk
0x00007FFF6736CED1 (ntdll) RtlUserThreadStart