Steps to reproduce:
1) Download and open attached project "repro_848314.zip"
2) Open scene "DensityParticles"
3) Either play it or select "Density particle system" from the hierarchy

Actual result:
Errors get spammed:
"RendererUpdateManager only synchronizes renderers that are added to the scene, so AssertIsTransformInfoUpToDate can only be called on renderers that are added to the scene"
and
"In order to call GetTransformInfoExpectUpToDate, RendererUpdateManager.UpdateAll must be called first."

Expected result: No errors

Tested and reproduced on:
Windows 10
Unity 5.6.1p1, 2017.2.0a1

Not reproducible in:
5.5.3f1

Verified on: 2017.2.0a4 (fefbe8dde68f).