apk3: provider priority is not respected

I created two packages, testpkg-a and testpkg-b. They both provide testfoo with an identical version, with testpkg-a having priority of 1 and testpkg-b having priority of 100.

adbdump for testpkg-a, showing it has the correct priority and provides:

#%SCHEMA: 676B6370
# ADB block, size: 292, compat: 0, ver: 0
info:
  name: testpkg-a
  version: 0.1-r0
  unique-id: c1be6a801cc49e691a96f5f12117ac300f13d0eb
  description: Test package
  arch: x86_64
  license: custom:meta
  origin: testpkg-a
  maintainer: q66 <q66@chimera-linux.org>
  url: https://chimera-linux.org
  build-time: 1679187819
  installed-size: 4096 B
  priority: 1
  provides: # 1 items
    - testfoo=0.1-r0
paths: # 1 items
  - acl:
      mode: 755
      user: root
      group: root
# sig v00 h04 8d10a60e37e6ce5ec1ccec8752206cb61e14f90b5e8dbe823c794e6bc078a93235cfca9df149f3792061b4d595cb60c259cfe8522d99..: UNTRUSTED signature

adbdump for testpkg-b, showing the same:

#%SCHEMA: 676B6370
# ADB block, size: 304, compat: 0, ver: 0
info:
  name: testpkg-b
  version: 0.1-r0
  unique-id: 8ce10ac4c5ef480b149024358d9908bce206e708
  description: Test package
  arch: x86_64
  license: custom:meta
  origin: testpkg-a
  maintainer: q66 <q66@chimera-linux.org>
  url: https://chimera-linux.org
  build-time: 1679187819
  installed-size: 4096 B
  priority: 100
  provides: # 1 items
    - testfoo=0.1-r0
paths: # 1 items
  - acl:
      mode: 755
      user: root
      group: root
# sig v00 h04 8d10a60e37e6ce5ec1ccec8752206cb67ecd102f70341aee0ffba8f5162e0cc2c6b8e8255b98fcb58d45efcd9a3c18b75a50945b0825..: UNTRUSTED signature

since they have the same version, apk should use the priority as a tie-breaker, and install testpkg-b when requesting a testfoo. However, this is not the case:

$ apk add testfoo
(1/1) Installing testpkg-a (0.1-r0)