Unnecessary   in WebKit browsers

[joshmaker]

I have observed both Chrome and Safari adding unnecessary " " characters when a normal space would work better.

This issue is easy to replicate. Start with some simple HTML such as

<p>This is a simple sentence.</p>

Now delete and re-create all the spaces in the sentence one by one. In FireFox, the markup will look exactly the same before and after doing this. However, in both Safari and Chrome, after I delete and re-create the spaces the markup looks like this:

<p>This&nbsp;is&nbsp;a&nbsp;simple&nbsp;sentence.</p>

I have been able to consistently replicate this bug in both Chrome 29.0.1547.76 for Mac, and Safari 6.0.5

This bug occurs in CKEditor 4.2, 4.3, and in the latest nightly.

[joshmaker]

GIF animation of the bug

[Jakub Ś]

Problem can be reproduced from CKEditor 4.0 (works fine in 3.6.x nad 4.0 beta) in Blink and Webkit.

[Jakub Ś]

This is in fact DUP of #9929.