Pasting a block of text that was copied in Chrome may insert a trailing paragraph

[azaozz]

To reproduce:

• Visit any website, triple-click to select one paragraph.
• Paste in the Visual editor.
• Inspect the element with the browser tools: there is an empty paragraph after the one you just pasted.

The same thing happens if copying from Chrome and pasting in Firefox or IE. Doesn't happen if copying from Firefox and pasting in Chrome.

[azaozz]

Happens when copying from all WebKit based browsers. Caused by the browser appending a <br class="Apple-interchange-newline"> to the clipboard.

This behaviour is not new. TinyMCE removes these br tags but only when running the "word filtering". Seems these have to be removed in all cases.

[azaozz]

In 35597:

TinyMCE: always remove trailing <br> added by WebKit browsers to the clipboard.

Fixes #34642.