[Firefox] Space typed at the end of paragraph is not returned by editor.getData()

[Inga]

This is only reproducible on FF. Steps to reproduce:

1. Go to ​http://nightly.ckeditor.com/15-04-10-06-08/full/samples/replacebyclass.html
2. In the console type: CKEDITOR.instances.editor1.editable().on('keyup', function(){console.log(CKEDITOR.instances.editor1.getData())})
3. Start typing in the editor -> You can see in the console that the first space after some text is ignored and not inserted in the Editor

[Jakub Ś]

I have been able to reproduce this problem from CKEditor 3.0.2 in Firefox and IE8-11.

[Piotrek Koszuliński]

This is a DUP of some older issues. Basically, browser engines are cheating - it inserts a normal space but shows it as a nbsp.

[Jakub Ś]

Perhaps a dup of this one #9978?

[Piotrek Koszuliński]

No. #9978 is just about a keystroke, although I haven't read the whole discussion. I've looked for the DUP too and I found #12606. It is closed as invalid and in my opinion it makes sense. As you explained there, it works differently in Chrome and in FF and IE8-11. Both ways have their own problems, but I think that the Gecko way generates less problems. Touching this would be very risky. And most importantly:

• the space is visible,
• it happens only at the end of blocks.

BTW. There's also #7136 where I explained what's the general problem.