StackScreenNavigator gives an error when using isSwipeToPopEnabled = true

[denisgl7]

The error occurs when an unfinished swipe to the previous screen and return

this._dragEffectContext = this._dragEffectTransition(this._previousScreenInTransition, this._activeScreen, null, true);
[Fault] exception, information=TypeError: Error #1006: value is not a function.

Error does not always occur. I can conduct more investigations. But maybe you have ideas why it arises

Once there was such an error, but in the process of use, I do not remember how it came about

[Fault] exception, information=TypeError: Error #1009: Cannot access a property or method of a null object reference.
var screenItem:StackScreenNavigatorItem = this.getScreen(this._activeScreenID); null

[joshtynjala]

Unfortunately, no ideas off the top of my head.