FF: Replacing <Enter> with <Shift+Enter> results in extra <br />

[Chris Ingham]

Firefox only (not reproducible in IE10, Chrome24):

I type a line of text followed by Enter. Whoops - I meant to type Shift+Enter, so I hit Backspace followed by Shift+Enter. What gives? Now my cursor is two 'lines' down!

Here's what I type:

"A line of text", <Enter>, <Backspace>, <Shift+Enter>

And now my cursor is two <br /> down instead of just one.

Verified in the basic demo and the nightly Using the "Enter" key in CKEditor sample, where I can see that 2 <br /> have been inserted from my final single <Shift+Enter>.

I'm running Firefox 18.0.2.

[Jakub Ś]

Problem can be reproduced in Firefox form CKEditor 3.0.

In Firefox in plain contenteditable div with P inside this is what you get after above TC:

<p>
txtd
<br>
<br type="_moz">
</p>

and this is what you get in editor:

<p>
txtd
<br type="_moz">
<br>
<br type="_moz">
</p>

When you switch to source you get two br tags.

Seems that this extra <br type="_moz"> may be causing problems here.