Layer-backed NSScrollView fades content in as it scrolls

Originator:joshaber
Number:rdar://9709500 Date Originated:6/30/11
Status:Open Resolved:
Product:Mac OS X Product Version:Mac OS X 10.6.8
Classification: Reproducible:Always
 
Summary:
When NSScrollView is layer-backed, it fades content in as it scrolls. This behavior looks pretty odd and is often not wanted. There doesn't appear to be a way to turn it off.

Steps to Reproduce:
1. Create a scroll view.
2. Mark it as being layer-backed.
3. Scroll.

Expected Results:
4. Scroll view would behave as it does when not layer-backed. Content would appear instantly as it scrolls.

Actual Results:
4. Scroll view fades content in as it scroll.

Regression:
Unknown.

Notes:
See attached example project.

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!