undefined is not an object (evaluating 'i.params.swipeToClose')

[scp]

In vanilla/core

Seeing this error from iOS users - managed to track it down to specifically when users use the iOS app switcher/or the app loses focus whilst the popup is open - when user returns to the app the error is triggered:

undefined is not an object (evaluating 'i.params.swipeToClose')

Have submit PR to resolve this.