Hi!

We’re experiencing a non negligible amount of crashes with our iOS app. We’re using the Intercom iOS SDK v18.2.0 (AKA the latest). As far as we can see, the user goes into the intercom integration, and at some point it crashes.

Here is the crash-logs from Sentry:
 

OS Version: iOS 18.0.1 (22A3370)
Report Version: 104

Exception Type: EXC_CRASH (SIGABRT)
Crashed Thread: 0

Application Specific Information:
Expected dequeued view to be returned to the collection view in preparation for display. When the collection view's data source is asked to provide a view for a given index path, ensure that a single view is dequeued and returned to the collection view. Avoid dequeuing views without a request from the collection view. For retrieving an existing view in the collection view, use -uUICollectionView cellForItemAtIndexPath:] or - UICollectionView supplementaryViewForElementKind:atIndexPath:]. Dequeued view: <IntercomSDK_ITBBlockCollectionViewCell: 0x1224ccc00; baseClass = UICollectionViewCell; frame = (24 2331; 318 239); backgroundColor = UIExtendedGrayColorSpace 0 0; layer = <CALayer: 0x303e84f00>>; Collection view: <UICollectionView: 0x107734e00; frame = (0 0; 366 438.667); clipsToBounds = YES; gestureRecognizers = <NSArray: 0x3030acd20>; backgroundColor = UIExtendedGrayColorSpace 0 0; layer = <CALayer: 0x303eb2a60>; contentOffset: {0, 1571.6666666666667}; contentSize: {366, 4007}; adjustedContentInset: {0, 0, 0, 0}; layout: <UICollectionViewFlowLayout: 0x122545680>; dataSource: <IntercomSDK_ITBBlockListViewController: 0x10c561400>>

Thread 0 Crashed:
0   CoreFoundation                  0x30dfc608c         __exceptionPreprocess
1   libobjc.A.dylib                 0x3086372e0         objc_exception_throw
2   Foundation                      0x30bfca158         -ÂNSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:]
3   UIKitCore                       0x3138c8d40         __43-eUICollectionView _updateVisibleCellsNow:]_block_invoke.498
4   UIKitCore                       0x3140021e0         -8_UICollectionViewSubviewManager removeAllDequeuedViewsWithEnumerator:]
5   UIKitCore                       0x313090ca8         -sUICollectionView _updateVisibleCellsNow:]
6   UIKitCore                       0x312fc259c         -tUICollectionView _setupCellAnimations]
7   UIKitCore                       0x312f51b9c         -ÂUICollectionView _updateRowsAtIndexPaths:updateAction:updates:]
8   UIKitCore                       0x3132e4180         --UICollectionView reloadItemsAtIndexPaths:]
9   Intercom                        0x103d68400         - IntercomSDK_ITBBlockListViewController reloadRequiredForBlock:]
10  Intercom                        0x103d6dea4         - IntercomSDK_ITBImageBlockView adjustBlockSizeForImage:]
11  Intercom                        0x103d6ebc0         __43- IntercomSDK_ITBImageBlockView loadImage:]_block_invoke.61
12  Intercom                        0x103d64584         - IntercomSDK_ITBAnimatedImageView loadImageWithURLString:actionsBeforeNetworkLoad:completion:animationOptions:]
13  Intercom                        0x103d6e9e8         - IntercomSDK_ITBImageBlockView loadImage:]
14  Intercom                        0x103d6f0ac         -oIntercomSDK_ITBImageBlockView configureWithBlock:]
15  Intercom                        0x103d67858         -ÂIntercomSDK_ITBBlockCollectionViewCell configureWithBlock:]
16  Intercom                        0x103d6816c         - IntercomSDK_ITBBlockListViewController collectionView:cellForItemAtIndexPath:]
17  UIKitCore                       0x312f63de0         __112-oUICollectionView _createPreparedCellForItemAtIndexPath:withLayoutAttributes:applyAttributes:isFocused:notify:]_block_invoke
18  UIKitCore                       0x312f625f8         +:UIView(Animation) performWithoutAnimation:]
19  UIKitCore                       0x31315bb44         -2UICollectionView _createPreparedCellForItemAtIndexPath:withLayoutAttributes:applyAttributes:isFocused:notify:]
20  UIKitCore                       0x3138c68fc         -ÂUICollectionView _prefetchItemsForPrefetchingContext:]
21  UIKitCore                       0x3131ea440         - UICollectionView _updatePrefetchedCells:]
22  UIKitCore                       0x3138c8174         -rUICollectionView _updateCycleIdleUntil:]
23  UIKitCore                       0x313c91194         ___UIUpdateCycleNotifyIdle_block_invoke
24  libdispatch.dylib               0x31d93636c         _dispatch_call_block_and_release
25  libdispatch.dylib               0x31d9380cc         _dispatch_client_callout
26  libdispatch.dylib               0x31d9469dc         _dispatch_main_queue_drain
27  libdispatch.dylib               0x31d9465f8         _dispatch_main_queue_callback_4CF
28  CoreFoundation                  0x30df98f60         __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
29  CoreFoundation                  0x30df96184         __CFRunLoopRun
30  CoreFoundation                  0x30df955b4         CFRunLoopRunSpecific
31  GraphicsServices                0x3a55131c0         GSEventRunModal
32  UIKitCore                       0x3132b62bc         -sUIApplication _run]
33  UIKitCore                       0x313364dd8         UIApplicationMain
34  Poka                            0x20226a33c         main (main.m:16)
35  <unknown>                       0x1b09d8d34         <redacted>