Caishen causing crash #136
Description
It seems something is keeping a strong reference to CardTextField and is not releasing it
It then still seems to be registered for some internal notification that tries to access its superview, which it might not have at that point, causing crash. (In our case this is caused by a call to .setContentOffset(.. on a collectionView)
Heres the call stack
And heres a screenshot of the memory graph showing the textfields still in memory after the view controller in which they reside is released
Heres a sample project demonstrating the crash:
CaishenCrash.zip
Steps to reproduce in the demo project:
- Build & Run
- Tap button labelled "push vc"
- On the next viewcontroller, do not tap in the CardTextField (doing so prevents the crash ... ? )
- Tap button labelled "back"
- Tap button labelled "crash"
- Observe crash
Also, in our crashlytics data, this only seems to be happening on iOS 11 too, for some reason.