From 464080193993525ee575f3ef1d0fd061059f36ef Mon Sep 17 00:00:00 2001
From: Levi McCallum <levi@levimccallum.com>
Date: Tue, 23 Feb 2016 09:36:11 -0800
Subject: [PATCH 1/2] Enable animated bounds changes in ASCollectionView

---
 AsyncDisplayKit/ASCollectionView.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/AsyncDisplayKit/ASCollectionView.mm b/AsyncDisplayKit/ASCollectionView.mm
index 77fc3dd60d..9150c5170a 100644
--- a/AsyncDisplayKit/ASCollectionView.mm
+++ b/AsyncDisplayKit/ASCollectionView.mm
@@ -645,7 +645,7 @@ static NSString * const kCellReuseIdentifier = @"_ASCollectionViewCell";
     if (_ignoreMaxSizeChange) {
       _ignoreMaxSizeChange = NO;
     } else {
-      [self performBatchAnimated:NO updates:^{
+      [self performBatchAnimated:YES updates:^{
         [_dataController relayoutAllNodes];
       } completion:nil];
     }

From c2d379f8f55eb232826567bed02b2dde1e6cd554 Mon Sep 17 00:00:00 2001
From: Levi McCallum <levi@levimccallum.com>
Date: Tue, 23 Feb 2016 13:02:37 -0800
Subject: [PATCH 2/2] Add a bit of documentation to describe the problem this
 is solving

---
 AsyncDisplayKit/ASCollectionView.mm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/AsyncDisplayKit/ASCollectionView.mm b/AsyncDisplayKit/ASCollectionView.mm
index 9150c5170a..2bdbb1d641 100644
--- a/AsyncDisplayKit/ASCollectionView.mm
+++ b/AsyncDisplayKit/ASCollectionView.mm
@@ -645,6 +645,9 @@ static NSString * const kCellReuseIdentifier = @"_ASCollectionViewCell";
     if (_ignoreMaxSizeChange) {
       _ignoreMaxSizeChange = NO;
     } else {
+      // This actually doesn't perform an animation, but prevents the transaction block from being processed in the
+      // data controller's prevent animation block that would interupt an interupted relayout happening in an animation block
+      // ie. ASCollectionView bounds change on rotation or mutl-tasking split view resize.
       [self performBatchAnimated:YES updates:^{
         [_dataController relayoutAllNodes];
       } completion:nil];