Open Radar

 
Summary:
When using the iOS simulator (Xcode 9 beta 2), significant rendering issues are commonly observed. Initially, I believed this was related to errors in an application I building. However, I’ve been able to observe the issues in system apps (most easily observed in Photos).

Steps to Reproduce:
- Launch iOS simulator from Xcode > Open Developer Tool > Simulator menu item
- Launch Photos app (occurs in system apps as well as third-party apps)
- Scroll around randomly; observe flickers and glitches in screen rendering

Expected Results:
- Screen should never draw inaccurately

Actual Results:
- Frequent screen glitches and flickers are observed

Version:
Version 9.0 beta 2 (9M137d)

Notes:
Model Name:	MacBook Pro
  Model Identifier:	MacBookPro13,3
  Processor Name:	Intel Core i7
  Processor Speed:	2.7 GHz
  Number of Processors:	1
  Total Number of Cores:	4
  L2 Cache (per Core):	256 KB
  L3 Cache:	8 MB
  Memory:	16 GB
  Boot ROM Version:	MBP133.0226.B23
  SMC Version (system):	2.38f7


  System Version:	macOS 10.12.5 (16F73)
  Kernel Version:	Darwin 16.6.0
  Boot Volume:	Macintosh HD