[QUERY TAB IN UI] Old bucketnames show up in the list when tab is pressed while selecting bucketname

Example cluster:
http://172.23.107.165:8091/

The only Bucket created on this cluster:
simple_table_db_2652_simple_table

In query tab, try select * from <<press tab to select the bucket>>

On pressing tab, the list of old buckets show up from previous test runs which are not there on the cluster anymore.

Couchbase server was re-installed between tests.

Attaching the screenshot.