`archive_unless_directed` doesn't work properly with `otherwise`

[doy-stripe]

filter {
  has ["foo", "bar"]
  label "a"
}.otherwise {
  has ["foo"]
  label "b"
}.archive_unless_directed

produces a query like foo -{(to:me bar)} (for the archive_unless_directed filter), but i would expect it to produce something like foo -{(to:me OR bar)} since i want to skip archiving if it's either addressed to me or if bar matches. or is there a better way to accomplish what i'm doing?