App crash on viewDidDisappear - ios

Question

There is a very strange crash that occurs only on 5, 5s and SE models with iOS 10.2. Firebase says that 100% of crashes happened in background.
I got able to exactly reproduce the stack of crash (but not the crash itself on the simulator) and only figured out that it happens when the user quit an app. Seems like no other code of viewDidDisappear get called on real crash, because the stack changes in this case.
Actually, the line that mentioned in crash report goes straight after
super.viewDidDisappear(animated) and it is blank…
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
self.keyboardAvoiding.endAvoiding()
}
KeyboardAvoiding
func endAvoiding()
{
self.avoiding = false
// Update view frame
updateConstraint(nil)
}
private func updateConstraint(_ keyboardFrame: CGRect?, animationDuration: TimeInterval? = 0.0)
{
// Disable animation
let state = UIView.areAnimationsEnabled
UIView.setAnimationsEnabled(false)
// Force to recalculate view frame if needed (without animation)
self.view.superview?.layoutIfNeeded()
// Restore previous animation state
UIView.setAnimationsEnabled(state)
if let keyboardFrame = keyboardFrame
{
// Decrease view frame
self.constraint.constant = keyboardFrame.height
}
else {
// Reset bottom constraint to initial value
self.constraint.constant = self.initialConstraintConstant
}
// Layout superview
UIView.animate(withDuration: animationDuration ?? 0.0, animations: {
self.view.superview?.layoutIfNeeded()
if let keyboardAvoidingScrollView = self.view.firstViewOfClass(TPKeyboardAvoidingScrollView.self)
{
// Scroll to active text field if scroll view frame changed
keyboardAvoidingScrollView.scrollToActiveTextField()
}
})
}
Here is a crash report:
Hardware Model: iPhone6,2
Code Type: ARM-64
Parent Process: ??? [1]
OS Version: iPhone OS 10.2 (14C92)
Exception Type: SIGTRAP
Exception Codes: #0 at 0x100255178
Crashed Thread: 0
Application Specific Information:
Selector name found in current argument registers: release
Thread 0 Crashed:
0 _______ 0x0000000100255178 _______.PhoneNumberController.viewDidDisappear(Swift.Bool) -> () (PhoneNumberController.swift:97)
1 _______ 0x00000001002551a4 #objc _______.PhoneNumberController.viewDidDisappear(Swift.Bool) -> () (PhoneNumberController.swift:0)
2 UIKit 0x000000018e7026f4 -[UIViewController _setViewAppearState:isAnimating:] + 524
3 UIKit 0x000000018e7765b4 -[UIViewController __viewDidDisappear:] + 140
4 UIKit 0x000000018e7c02e0 -[UINavigationController viewDidDisappear:] + 228
5 UIKit 0x000000018e7026f4 -[UIViewController _setViewAppearState:isAnimating:] + 524
6 UIKit 0x000000018e7765b4 -[UIViewController __viewDidDisappear:] + 140
7 CoreFoundation 0x00000001887ceb10 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 16
8 CoreFoundation 0x00000001887ce214 _CFXRegistrationPost + 396
9 CoreFoundation 0x00000001887cdf90 ___CFXNotificationPost_block_invoke + 56
10 CoreFoundation 0x000000018883db8c -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1500
11 CoreFoundation 0x000000018870fe64 _CFXNotificationPost + 372
12 Foundation 0x0000000189244e0c -[NSNotificationCenter postNotificationName:object:userInfo:] + 64
13 UIKit 0x000000018e9785d8 __102-[UIApplication _handleApplicationDeactivationWithScene:shouldForceExit:transitionContext:completion:]_block_invoke.2100 + 288
14 UIKit 0x000000018e97bfdc _runAfterCACommitDeferredBlocks + 288
15 UIKit 0x000000018e96dd50 _cleanUpAfterCAFlushAndRunDeferredBlocks + 556
16 UIKit 0x000000018e6dd0b4 _afterCACommitHandler + 164
17 CoreFoundation 0x00000001887e20c0 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 28
18 CoreFoundation 0x00000001887dfcf0 __CFRunLoopDoObservers + 368
19 CoreFoundation 0x00000001887e0180 __CFRunLoopRun + 1020
20 CoreFoundation 0x000000018870e2b8 CFRunLoopRunSpecific + 440
21 GraphicsServices 0x000000018a1c2198 GSEventRunModal + 176
22 UIKit 0x000000018e7557fc -[UIApplication _run] + 680
23 UIKit 0x000000018e750534 UIApplicationMain + 204
24 _______ 0x00000001000e3188 main (AppDelegate.swift:25)
25 ??? 0x00000001876f15b8 0x0 + 0