Quill in Scrollview produces exception errors with certain actions (iOS and Android)

[next2heaven]

There is an issue when pasting text using the press and hold method in iOS. This produces the following error:

Failed assertion: line 107 pos 12: '_positions.isNotEmpty': ScrollController not attached to any scroll views.

When selecting a word and then moving the start or end handles to extend the selection it will produce this error (iOS and Android):

ScrollController not attached to any scroll views.
'package:flutter/src/widgets/scroll_controller.dart':
package:flutter/…/widgets/scroll_controller.dart:1
Failed assertion: line 107 pos 12: '_positions.isNotEmpty'

I've built an example project to showcase the issue here: https://github.com/next2heaven/issue_multi_quill

I'm using the latest version of flutter-quill and flutter.