Volume number listed twice for main volumes

[gtabach]

For volumes of multi-volume books that have a volume title and a maintitle, the volume number is listed twice (and italicized both times):

Kiparsky, V. (1979). Russian historical grammar. Vol. 1. The development of the sound system (J. I. Press, Trans.; Vol. 1). Ardis.

Patz, E. (1991). Djabugay. In R. M. W. Dixon & B. J. Blake (Eds.), The handbook of Australian languages. Vol. 4. The aboriginal language of Melbourne and other grammatical sketches (pp. 245–347, Vol. 4). Oxford University Press.

According to APA7, the volume number in such cases should only be listed in the middle of the title, not in parentheses.

Thank you!

[plk]

Could you put in here the .bib entries that correspond so I can reproduce?

[gtabach]

@InCollection{patz1991,
  author    = {Patz, Elizabeth},
  booktitle = {The Aboriginal Language of {Melbourne} and Other Grammatical Sketches},
  publisher = {Oxford University Press},
  title     = {Djabugay},
  year      = {1991},
  address   = {Oxford},
  editor    = {Dixon, Robert M. W. and Blake, Barry J.},
  pages     = {245--347},
  volume    = {4},
  maintitle = {The Handbook of {Australian} Languages},
}

@Book{kiparsky1979,
  author     = {Kiparsky, Valentin},
  publisher  = {Ardis},
  title      = {The development of the sound system},
  year       = {1979},
  address    = {Ann Arbor},
  volume     = {1},
  maintitle  = {{Russian} historical grammar},
  translator = {Press, J. I.},
}

[plk]

Fixed in DEV