Yes this has been reported that all coins sent to yobit confirm and are in block explorer but Yobit does not place those coins in your yobit wallet. Please do not send any coins to Yobit I have already paid for a listing at a new exchange so please wait until that listing goes live I don't want you to lose any coins ok.
Also you might find this Twitter post interesting:
http://www.fiverr.com/linker?username=designerhamza&view=conversationAs you can see in the Twitter post above people are already complaining about this problem...