Editor content scrolls when pasting data from clipboard (iOS)

[harin]

Steps to reproduce

1. Type some contents in CKEditor (such that scrollbar is showing).
2. Scroll down and tap somewhere in the middle.
3. Paste some data (plain text) from clipboard after holding on the caret and selecting 'Paste'

Expected result

The pasted content must appear on the caret position and the screen should be steady.

Actual result

The contents in the editor scrolls up and down. Sometimes the entire screen scrolls up and down especially when zoomed-in . The pasted content appears on the caret position. But hard to find where it is.

Other details (browser, OS, CKEditor version, installed plugins)

On most of the iOS versions including tablets. Browsers : Safari and Chrome.

[kkrzton]

I noticed a similar behavior (both on Safari and Chrome on iOS):

1. Go to ​http://ckeditor.com/demo.
2. Scroll down and tap somewhere in the middle.
3. Paste some data (plain text) from clipboard after holding on the caret and selecting 'Paste'.

The editor scrolls back to top and then scrolls down in a way that pasted text is always visible on the bottom of the editor (as a last line).

Versions: iOS 9.3.5, Chrome 53.

[Jakub Ś]

Other issues which concern scrolling on iPad are #11730, #10694, #14759, #14836, #12749 and #16785.

[m-turek]

I was able to reproduce this issue following the steps by @k.krzton described in the comment: ​https://dev.ckeditor.com/ticket/14836#comment:1 CKEditor version: 4.6.2, iOS 10.2.1, Safari 10.0