While 'CREATE PRIMARY INDEX' is executing, 'SELECT * from system:indexes" fails with Panic: runtime error"

cbq> select * from system:indexes;
{
"requestID": "c4bf9f14-29e2-4c16-90df-0a557e5188c8",
"signature":

{ "*": "*" }

,
"results": [
],
"errors": [

{ "code": 5000, "msg": "Panic: runtime error: invalid memory address or nil pointer dereference - cause: runtime error: invalid memory address or nil pointer dereference" }

],
"status": "stopped",
"metrics":

{ "elapsedTime": "1.024911655s", "executionTime": "1.024737165s", "resultCount": 0, "resultSize": 0, "errorCount": 1 }

}

same error if command executed as curl http://172.23.100.21:8093/query/service -d 'statement=select * from system:indexes'

why this is a problem is that the only way to determine if CREATE PRIMARY has completed is to poll its entry in system:indexes for status 'online' so it becomes very visible, and another thing to workaround