Interface state not update correctly during layer thrash.

CHANGELOG.md

@@ -43,6 +43,7 @@
 - Improve TextNode2 by skipping an unneeded copy during measurement. [Adlai Holler](https://github.com/Adlai-Holler)
 - Improve locking around clearContents [Michael Schneider](https://github.com/maicki)
 - Unlock before cleanup and calling out to subclass hooks for animated images. [Michael Schneider](https://github.com/maicki) [#1087](https://github.com/TextureGroup/Texture/pull/1087)
+- [ASDisplayNode] Fix interface state update for layer backed nodes when layer thrashes (interface coaleascing case).[Max Wang](https://github.com/wsdwsd0829). [#1111](https://github.com/TextureGroup/Texture/pull/1111)
 
 ## 2.7
 - Fix pager node for interface coalescing. [Max Wang](https://github.com/wsdwsd0829) [#877](https://github.com/TextureGroup/Texture/pull/877)

Source/ASDisplayNode.mm

@@ -2947,6 +2947,15 @@ - (void)willEnterHierarchy
 
   if (![self supportsRangeManagedInterfaceState]) {
     self.interfaceState = ASInterfaceStateInHierarchy;
+  } else if (ASCATransactionQueue.sharedQueue.isEnabled) {
+    __instanceLock__.lock();
+    ASInterfaceState state = _preExitingInterfaceState;
+    _preExitingInterfaceState = ASInterfaceStateNone;
+    __instanceLock__.unlock();
+    // Layer thrash happened, revert to before exiting.
+    if (state != ASInterfaceStateNone) {
+      self.interfaceState = state;
+    }
   }
 }
 
@@ -2985,6 +2994,8 @@ - (void)didExitHierarchy
       unsigned isStillInHierarchy = _flags.isInHierarchy;
       BOOL isVisible = ASInterfaceStateIncludesVisible(_pendingInterfaceState);
       ASInterfaceState newState = (_pendingInterfaceState & ~ASInterfaceStateVisible);
+      // layer may be thrashed, we need to remember the state so we can reset if it enters in same runloop later.
+      _preExitingInterfaceState = _pendingInterfaceState;
       __instanceLock__.unlock();
       if (!isStillInHierarchy && isVisible) {
 #if ENABLE_NEW_EXIT_HIERARCHY_BEHAVIOR
@@ -3102,6 +3113,7 @@ - (void)applyPendingInterfaceState:(ASInterfaceState)newPendingState
       return;
     }
     _interfaceState = newState;
+    _preExitingInterfaceState = ASInterfaceStateNone;
   }
 
   // It should never be possible for a node to be visible but not be allowed / expected to display.

Source/Private/ASDisplayNodeInternal.h

@@ -83,6 +83,8 @@ AS_EXTERN NSString * const ASRenderingEngineDidDisplayNodesScheduledBeforeTimest
 
   _ASPendingState *_pendingViewState;
   ASInterfaceState _pendingInterfaceState;
+  ASInterfaceState _preExitingInterfaceState;
+
   UIView *_view;
   CALayer *_layer;