declare used in queries in source breaks when loading into composer.

[anikaks]

My source contains this query

  query: by_destination_growth_rate is {
    declare: 
      flight2004 is flight_count {? dep_time: @2004}  // can use relative declarations
      flight2003 is flight_count {? dep_time: @2003}  //  also
    group_by: destination.name
    aggregate: 
      flight2004
      flight2003
      delta is flight2004 - flight2003
      growth is (flight2004 - flight2003)/flight2004*100
  }

When I load that query in composer, it fails to recognize the declared things:

If I write out the definitions of flight2004 and flight2003 in each place they're referenced in the other fields it works.