It looks like I've lost a small number of my POS tokens. I sent 0.1 POS to myself and the transaction passed only to the address of the contract. Next came the following

 Warning! Error encountered during contract execution [Out of gas]
 The ERC-20 Token Transfer might have Failed (ErrCode: unable to locate corresponding Transfer event log), check with sender.

Looks like I did not put enough Gas Limit. Be more careful guys.