Hmm. "Unlocked balance" is a confirmed coins? Thank's
Another problem is actual.. Coins from balance disappears before going confirmed.
How can I check, are my block makes orphaned?
Today night I mined ~100 block's, and only last 30 of them I seen in my wallet.
After wallet restart, balance was 0

Sounds like it. I know some tests have been using testnet having to do with hard forking, so that may be an issue.