When using visual editor in Urdu Wikipedia, the RTL typing method is not working. Instead, it types LTR which is wrong for Urdu language. The direction of editor is correct but letters go in right side instead of left side, For example: if we write ویکی (wiki) it will be typed as یکیو (ikiw), reversed. However, it works properly in Persian and Arabic, and hence we found no issue there.
You can experiment this error through this link