Webkit Blink add multiple   to HTML pasted into contenteditable element.

[Jakub Ś]

Steps to reproduce

1. Go to ​https://en.wikipedia.org/wiki/HTTPS and copy first paragraph (from HTTPS to exchanged data)
2. Paste it in to CKEditor and switch to source.

Expected result

Clean HTML without any extra   before/after or between tags.

Actual result

HTML with extra   before/after or between tags. It works as expected if I for example run this code in dev tools: console.log(document.getElementById('mw-content-text').getElementsByTagName('p')[0].innerHTML);

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

Reproducible in Win 7 and Mac on Safari and Chrome.

[Jakub Ś]

This is a Blink/Webkit issue and there is nothing we can do as CKEditor gets data already processed by a browser.

​https://bugs.webkit.org/show_bug.cgi?id=154676
​https://bugs.chromium.org/p/chromium/issues/detail?id=589819