Copying and pasting lists adds empty list items

[grappler]

Issue Overview

I have been copying text from Word to Gutenberg 2.8.

After copying and pasting the content in a list block it looks like this:

In the code editor the content looks like follows.

<!-- wp:list -->
<ul>
	<li>Bauherrschaft: privat Gebäudeart: Ersatzneubau in Holz- </li>
	<li>Elementbauweise Realisierung: 2006 - 2007</li>
	<li>
		Verantwortliche Mitarbeit: Marcel, Enis<br/> </li>
	<li>Fotografen: Heinrich + Roland, Zürich
	</li>
	<li>Leistungsumfang Kosten- und Terminplanung</li>
</ul>
<!-- /wp:list -->

Even after removing the empty spaces in the list, they return once I saved the post.

Expected Behavior

I would expect that I could copy and paste text without it adding the extra spaces and <br> tags.

Possible Solution

Strip the spaces within the <li> tags.

[tofumatt]

Just to make sure we can reproduce this bug, which version of Word were you using? Operating system info would be great too 😄

[grappler]

I was opening a docx file in Pages on OSX. Now looking more into it the issues seems to be caused by a line breaker U+2028.

To test it you need some content like this.

• Copy the text and paste it with the option "Paste and match style".
• Convert the paragraph block to a list.
• Click in within the paragraph and move each item on it's own line.
• Save the post
• Refresh the page and see the issue.

It seems to work ok on Windows 10 with Word 2016.

[designsimply]

Thank you for reporting this and for testing Gutenberg! I am closing this issue as a duplicate of #5727 and this issue will be linked there for reference.