Entity-filter card background color

I’m having an issue recently with applying a background color to an ‘entity-filter’ card. This used to work but broke in a HA release a while back. Both cards should have the same dark grey background but the dynamic cards default to a white backgound. I’ve also tried the ‘custom:auto-entities’ card without luck. Code excerpt and screen shot attached. Thanks for any help!

title: Multi Room Audio Control
path: multi-room-control
icon: mdi:speaker
panel: false
visible: false
theme: midnight
cards:
  - type: vertical-stack
    cards:
    - type: entities
      style: |
        ha-card {
          background: RGB(91, 89, 89);
        }
      show_header_toggle: false
      entities:
        - input_select.multipi_source
        - input_select.speaker_group
        - media_player.bedroom_mpd
        - input_boolean.bedroom_speaker
        - input_boolean.bathroom_speaker
        - input_boolean.livingroom_speaker
        - input_boolean.office_speaker
      #  - input_boolean.iphone_speaker
    # #
    - type: entity-filter
      style: |
        ha-card {
          background: RGB(91, 89, 89);
        }
      show_header_toggle: false
      state_filter:
        - operator: ">"
          value: 0
      entities:
        - input_number.multipi_master_volume
        - input_number.bedroom_speaker_level
        - input_number.bathroom_speaker_level
        - input_number.livingroom_speaker_level
        - input_number.office_speaker_level
        #- input_number.iphone_speaker_level

Did you ever get a fix for this issue?