Is it a bug? My STEEM DOLLARS disappeared!!

I got some reward from this post: https://steemit.com/steemit/@facer/how-to-trade-steem-through-bitshares

and rewarded some tips today:  blogging reward of 15.805 SD and 4.517 STEEM POWER for facer/how-to-trade-steem-through-bitshares 

But the balance of  STEEM DOLLARS is zero.

Is it a bug or tell me i'am wrong.