Adapter subscribes to existing channels too many times at initialization

[mjtko]

The adapter subscribes to all channels at startup, and there appears to be a race condition or similar that causes it to subscribe to existing channels too many times when it's initialized.

[jamalex]

I'm getting this as well. Seems to subscribe anywhere from 1-4 times, which means it then responds that many times to each request.

[miurahr]

I've also reproduced this behavior but couldn't determined a root cause.
How can I investigate a status of kandan and hubot? query on database?