id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
12823	Redo is broken after undoing typing with IME	Piotrek Koszuliński		"1. Open replacebycode sample.
2. Set your system language to Japanese Hiragana.
3. Type 2-5 letters and press enter to commit composition.
4. Repeat the above few times.
5. Press CTRL+Z (**not** the undo button).
6. The changes were undid, but the redo button is disabled.

Reproduced on FF and Chrome. This issue is a little bit random - I think that order in which the CTRL and Z keys are released matters. In my case I was first releasing Z and then CTRL.

In http://dev.ckeditor.com/ticket/12391#comment:4 Artur suggested that there may be a change fired. I'm rather thinking that keyup causes the onTypingStart function to be executed.

Related issues: #12391, #12597."	Bug	confirmed	Normal		General	4.4.4