Confusing Query tab in fresh Couchbase install

Start Couchbase Docker container as “docker run -d -p 8091-8093:8091-8093 -p 11210:11210 couchbase”.
Setup the cluster using 256 MB for data and index RAM, install no sample buckets.
Click on Query tab, and the following query was shown:

create primary index on `travel-sample`;

This could be confusing as only the default bucket is installed.