Reporting UIKit iOS 9/10 Issue: UITableView creates retain cycles when performing animated updates fast

[kzaher]

I've reported this issue with UIKit here. If I reported this issue alone it would probably be ignored. The only chance of solving it is if a lot of people report this, so this is my best attempt.

We've also reported issue #842 to Apple, but as far as I can tell it still isn't resolved.

Short description of the issue:

When performing partial updates for UITableView with 2Hz (10 taps on Randomize button in Table/CollectionView partial updates example), UITableView creates internal retain cycles.

Expected outcome:

No retain cycles in UIKit.

What actually happens:

UIKit has internal retain cycles.

Self contained code example that reproduces the issue:

Code is contained in RxExample app (Table/CollectionView partial updates)

master branch

Platform/Environment

• iOS
• macOS
• tvOS
• watchOS
• playgrounds

How easy is to reproduce? (chances of successful reproduce after running the self contained code)

• easy, 100% repro
• sometimes, 10%-100%
• hard, 2% - 10%
• extremely hard, %0 - 2%

Xcode version:

Tested with Xcode 8.1

[kzaher]

I guess we have it recorded here. Not sure can we do something more.