There are still issues in RTL thats are not fixed. We fixed them in the Hebrew fork called "HebDokuWiki".
We opened up a bug list and there (in Hebrew) with still unsoled issues, mostly regarding css. for example the TOC seems to crash in to boxes.
We just updated the project and it seems to be developing quite well.
The main thing we need now is to translate documintation, we are doing it in: