Volume control problem through media player (Bluesound)

Hi. I have encountered a problem with controlling volume in media player integration. I don’t know if it matters, but hardwrae is Bluesound streamer.

I am running an automation to play internet radio stream. Automation and script code pasted below. It runs as intended - source is played with requested volume of 6%. However, I cannot increase volume through UI volume up button in mini media player card. I can only lower the volume and then go back to 6%, but not more.

Volume slider works, allowing me to go above 6%, but not the button. Did someone encountered something like this before and knows how to solve, perhaps?

I am running core-2021.11.1 Home Assistant Supervised.

code:

alias: Radio on workday morning
description: ''
trigger:
  - platform: state
    entity_id: binary_sensor.iphone_marcin_focus
    to: 'off'
    from: 'on'
    for:
      hours: 0
      minutes: 3
      seconds: 0
      milliseconds: 0
condition:
  - condition: state
    entity_id: binary_sensor.marcin_presence
    state: 'on'
  - condition: state
    entity_id: binary_sensor.workday_sensor
    state: 'on'
  - condition: time
    weekday:
      - mon
      - wed
      - thu
      - fri
action:
  - service: script.play_rns_in_salon
mode: single

and here is the script:

alias: Play RNŚ in Salon
sequence:
  - service: media_player.select_source
    target:
      entity_id: media_player.salon
    data:
      source: Radio Nowy Świat (Muzyka)
  - service: media_player.volume_set
    data:
      volume_level: 0.06
    target:
      entity_id: media_player.salon
  - service: media_player.media_play
    target:
      entity_id: media_player.salon
mode: single
icon: mdi:radio

Hi,
I see the same behaviour from my side on all my Bluesound devices. I mentioned this in a post back in May : Bluesound volume limited to 6 - Configuration - Home Assistant Community (home-assistant.io)

I just reported the bug on Github.