How to reproduce:
1. Download and open "ScaleRenderBug.zip"
2. Make sure that LightWeightRenderPipelineAsset is added in ProjectSettings->Graphics->Scriptable Render Pipeline Settings
3. Build and run the project
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Expected result: "expected.png" picture shows how different objects look in the Editor, Play mode (Expected)
Actual result: "actual.png" picture shows how the launched build with Xcode looks like with some rendered artefacts on top

Reproducible with:

VLNQA00212, iPhone XS, iOS version 12.1.3 (16D5039a)
2018.3.9f1, 2019.1.0b7, 2019.2.0a8

Not reproducible when testing with Android:
VLNQA00218, Samsung Galaxy Note9 (SM-N960U), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630

Note: couldn't reproduce this issue without LWRP(when LightweightRenderPipelineAsset was removed in the Project Settings->Graphics)