Query Tab in UI: Error message shown for non-indexed buckets

Error message is shown for non-indexed buckets:

[

{"code":4210,"msg":"Expression must be a group key or aggregate: (`indexes`.`condition`)"}

]

This could be because of recent fix by Gerald :
If any query involved aggregation and/or GROUP BY, the SELECT list and ORDER BY list will now be restricted to expressions involving aggregate functions and GROUP BY keys.