Sometimes lcb_wait function works infinitly (libcouchbase C library)

Hello,
I use libcouchbase C library (version 2.0.1, Couchbase Server ver 1.8.1) and sometimes I have strange behaviour.
Usually problem happens after creating bucket (I use curl for it).
After that I try to connect to created bucket... and call lcb_wait function.
And it executes infinitly...
I investigate it a little and found, what the problem occures when in Couchbase server bucket loaded some times (in log there is note something like "bucket Name loader (3 times)").

And why lcb_wait works infinitly???
I add debug output and found that select function (on which event loop is based) returns 0 (that means that timeout happend) and after that timer is deleted... and than next time select calls, timeout is 0... that means that wait event infinitly, but events doesn't occurs.

What do you think about that problem?

P.S. Then I create many buckets in parallel, this bug occurs very often