1137612 - <br type="_moz"> is inserted on <p contenteditble="true">

Status: RESOLVED DUPLICATE of bug 1569902

(Core :: DOM: Editor, defect)

Description

[Thibaud]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:36.0) Gecko/20100101 Firefox/36.0
Build ID: 20150224134236

Steps to reproduce:

On a <p contenteditable="true">
Write one or more character without spaces and press enter.


Actual results:

<p contenteditable="true">
o
<br></br>
<br type="_moz"></br>
</p>


Expected results:

<p contenteditable="true">
o
<br></br>
<br></br>
</p>

Comment 1

[alfadog]

Not sure that this bug is limited to a <P>, or that any keystrokes are required.

Simply creating an empty contenteditable element causes a <br type="_moz"></br> to be inserted.

It appears consistently after changing the attributes of its element, however it's too difficult for me to pinpoint the exact cause of it.

I'm using 45.0.2.

Comment 2

[Blazej Czapp]

I can confirm this happens in table cells with contenteditable=true:

<table>
    <tr><td contenteditable=true></td></tr>
</table>

Both inspector and .innerHTML show <br type="_moz"> as contents of the table cell.
Version: 55.0.5 (64bit)

Comment 3

[Roger]

Same unnecessary <br type="_moz"> insertion appears when there's an iframe in a table cell like:

<table>
<tr>
<td>
<iframe>{content}</iframe>
</td>
</tr>
</table>

Version: 65.0

Comment 4

[Kagami Rosylight [:saschanaz] (they/them)]

This is fixed by Bug 1569902.

CKEditor 4 still inserts <br type="_moz"> but it's set by their script, not Firefox itself.