Crash on iOS 17 when opening a post from a push notification (Intercom version 17.0.0)

Whenever we schedule a post from Intercom, user receives a push notification and opening it leads to a crash.

It was working before we updated Intercom to 17.0.0, previous version we were on was 16.5.5. We are wondering if it's related to the change introduced in 16.6.0.

iOS version we tested with: iOS 17.3.1, 17.4.1, 17.5

Here's the stack trace:

Last Exception Backtrace:
0   CoreFoundation                	0x1949cbf24 __exceptionPreprocess + 164 (NSException.m:249)
1   libobjc.A.dylib               	0x18c862018 objc_exception_throw + 60 (objc-exception.mm:356)
2   Foundation                    	0x193897fe8 -[NSConcreteMutableAttributedString initWithString:attributes:] + 356 (NSAttributedString.m:1029)
3   Intercom                      	0x105be84fc -[ICMActionButton initWithTitle:style:backgroundColor:foregroundColor:] + 376
4   Intercom                      	0x105be82c4 -[ICMActionButton initFilledButtonWithTitle:] + 140
5   Intercom                      	0x105c3cd24 -[ICMClosedConversationView createNewConversationButton] + 124
6   Intercom                      	0x105c3c988 -[ICMClosedConversationView setupView] + 664
7   Intercom                      	0x105c3c6dc -[ICMClosedConversationView initWithStartNewConversationButtonEnabled:] + 76
8   Intercom                      	0x105c6b0a4 ConversationViewController.setupClosedConversationViewIfNecessary(showNewConversationButton:) + 76
9   Intercom                      	0x105d45ab4 ConversationViewModel.updateViewForSuccess(with:) + 664
10  Intercom                      	0x105d49074 ConversationViewModel.inboxUpdated() + 176
11  Intercom                      	0x105d49168 @objc ConversationViewModel.inboxUpdated() + 28
12  CoreFoundation                	0x1949997cc __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 148 (CFNotificationCenter.c:700)
13  CoreFoundation                	0x1949996e8 ___CFXRegistrationPost_block_invoke + 88 (CFNotificationCenter.c:193)
14  CoreFoundation                	0x194999630 _CFXRegistrationPost + 440 (CFNotificationCenter.c:221)
15  CoreFoundation                	0x194997bf8 _CFXNotificationPost + 728 (CFNotificationCenter.c:1247)
16  Foundation                    	0x193826574 -[NSNotificationCenter postNotificationName:object:userInfo:] + 92 (NSNotification.m:531)
17  Intercom                      	0x105bf9914 -[ICMDataManager updateWithConversation:] + 604
18  Intercom                      	0x105c90af0 ConversationInteractor.updateWithExistingConversationIfNeeded() + 108
19  Intercom                      	0x105c681cc ConversationViewController.viewDidLoad() + 1032
20  Intercom                      	0x105c68224 @objc ConversationViewController.viewDidLoad() + 28
21  UIKitCore                     	0x196c2bdc4 -[UIViewController _sendViewDidLoadWithAppearanceProxyObjectTaggingEnabled] + 84 (UIViewController.m:3029)
22  UIKitCore                     	0x196c2a898 -[UIViewController loadViewIfRequired] + 936 (UIViewController.m:4754)
23  UIKitCore                     	0x196e66330 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 124 (UINavigationController.m:7779)
24  UIKitCore                     	0x196e6573c -[UINavigationController _startTransition:fromViewController:toViewController:] + 192 (UINavigationController.m:7817)
25  UIKitCore                     	0x196ccd050 -[UINavigationController _startDeferredTransitionIfNeeded:] + 608 (UINavigationController.m:8057)
26  UIKitCore                     	0x196d31db4 -[UINavigationController __viewWillLayoutSubviews] + 96 (UINavigationController.m:8369)
27  UIKitCore                     	0x196ff2960 -[UILayoutContainerView layoutSubviews] + 172 (UILayoutContainerView.m:89)
28  UIKitCore                     	0x196ff2894 __53-[UINavigationController setNeedsDeferredTransition:]_block_invoke + 48 (UINavigationController.m:5364)
29  UIKitCore                     	0x196c87338 -[_UIAfterCACommitBlock run] + 72 (_UIAfterCACommitQueue.m:137)
30  UIKitCore                     	0x196c871fc -[_UIAfterCACommitQueue flush] + 164 (_UIAfterCACommitQueue.m:228)
31  UIKitCore                     	0x196c87114 _runAfterCACommitDeferredBlocks + 496 (UIApplication.m:3144)
32  UIKitCore                     	0x196c86d4c _cleanUpAfterCAFlushAndRunDeferredBlocks + 80 (UIApplication.m:3108)
33  UIKitCore                     	0x196c86c5c _UIApplicationFlushCATransaction + 72 (UIApplication.m:3185)
34  UIKitCore                     	0x196c84474 _UIUpdateSequenceRun + 84 (_UIUpdateSequence.mm:119)
35  UIKitCore                     	0x196c840b8 schedulerStepScheduledMainSection + 148 (_UIUpdateScheduler.m:1039)
36  UIKitCore                     	0x196c84f04 runloopSourceCallback + 92 (_UIUpdateScheduler.m:1200)
37  CoreFoundation                	0x19499e874 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 (CFRunLoop.c:1957)
38  CoreFoundation                	0x19499e808 __CFRunLoopDoSource0 + 176 (CFRunLoop.c:2001)
39  CoreFoundation                	0x19499c2d8 __CFRunLoopDoSources0 + 244 (CFRunLoop.c:2038)
40  CoreFoundation                	0x19499b4c4 __CFRunLoopRun + 828 (CFRunLoop.c:2955)
41  CoreFoundation                	0x19499ad18 CFRunLoopRunSpecific + 608 (CFRunLoop.c:3420)
42  GraphicsServices              	0x1d9e0d1a8 GSEventRunModal + 164 (GSEvent.c:2196)
43  UIKitCore                     	0x196fd5fac -[UIApplication _run] + 888 (UIApplication.m:3713)
44  UIKitCore                     	0x197089ed8 UIApplicationMain + 340 (UIApplication.m:5303)
45  Morty                         	0x102227d34 main + 64 (AppDelegate.swift:18)
46  dyld                          	0x1b8cace4c start + 2240 (dyldMain.cpp:1298)