UICollectionView with self-sizing cells resizes cells during insert/remove animation or performBatchUpdates

Originator:egill
Number:rdar://35038472 Date Originated:October 17. 2017
Status: Resolved:
Product:UIKit Product Version:iOS 11.0.2
Classification: Reproducible:Always
 
Area:
UIKit

Summary:
A UICollectionView with a UICollectionViewFlowLayout should allow autolayout to allow for self-sizing cells. This works for static layouts, but when items are inserted or removed the cells resize to the estimated size before expanding again.

Steps to Reproduce:
See Sample project attached to rdar://23728611

Expected Results:
When inserting/removing items, the cells maintain their size.

Actual Results:
Cells reset to their estimated size before expanding to their actual size.

Version/Build: 
iOS 11.0.2

Notes:
This is still broken on iOS 11! It's forcing me to avoid using self-sizing cells, because I can't animate state changes! Is there a workaround?

Comments

I'm experiencing the same, though only on physical devices. Oddly, inserting self-sizing cells on the simulator works perfectly.

By Tooley7 at July 17, 2018, 2:16 p.m. (reply...)

Same issue for me... I didn't found a workaround for now.

By gwenn.guihal at Jan. 19, 2018, 5:36 p.m. (reply...)

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