break on backspace with arabic/persian languanges

[Mehdi Ghorban Pour]

Hi Please consider this scenario:

1. change direction to rtl
2. type some words. as you know in arabic/persian languages letters are attached to each other. for example توسعه
3. when you are writing it for the first time, there is no problem but if you put cursor after ع and hit backspace to delete it, the letters س and ه should be attached to each other but they get separated. the result after removing one character should be like this توسه but it's not.

thanks

[Mehdi Ghorban Pour]

bug in backspace rtl language

[Jakub Ś]

1. Set keyboard to Arabic (Saudi Arabia) on your operating system.
2. Go to uilanguages sample and set CKEditor to Arabic
3. Remove everything and type j,sudi on your latin keyboard
4. But cursor behind first letter which looks like latin 'd' and press backspace.

Results: in Blink (works fine in FF and IE) end result is as described by @mahdi87_gh.

This issue has started occurring from CKEditor 4.0 (works fine in 4.0 beta and native contenteditable).