Display Jitter

Configuration Frontend
1

I have observed jitter in several views of my HA instance. The pages are all a combination of horizontal and vertical cards. The combined card, displayed as a panel, can’t find a stable solution on a Lenovo Flex 2-15 running Linux Mint 20.3.
Here is an example of the problem:

Does anybody have a suggestion on how to fix this?

2

This is caused by the vertical scroll bar appearing and then disappearing for some reason. This may be caused by a card misreporting its height.

What sort of cards are you using in the vertical and horizontal stacks?

3

This is what is displayed on this particular view:

type: horizontal-stack
cards:
  - cards:
      - entity: media_player.roku_streaming_stick
        type: media-control
      - type: media-control
        entity: media_player.sony_bravia_tv
      - entity: media_player.living_room
        type: media-control
        name: sonos
      - type: entities
        entities:
          - entity: switch.sonos_living_room_subwoofer_enabled
          - entity: switch.sonos_living_room_crossfade
          - entity: switch.sonos_living_room_surround_enabled
    type: vertical-stack
  - type: vertical-stack
    cards:
      - type: custom:custom-sonos-card
        name: Sonos Livingroom
        groupsTitle: ''
        groupingTitle: ''
        favoritesTitle: ''
        headerImage: ''
        entities:
          - media_player.living_room
      - type: entities
        entities:
          - entity: switch.sonos_living_room_night_sound
          - entity: switch.sonos_living_room_speech_enhancement_2
4

My money would be on this:

custom-sonos-card

Try removing this card and see if the jitter stops.

If it does open an issue with the developer of the card.

5

Unfortunately, removing that card changes the geometry of the view. With the changed geometry, there is no problem.
You may be right about it being a specific card. I have seen it in other views, but I can’t remember what cards were present in them. I eventually was able to massage the content of the view to a stable arrangement. Some experiments may help me isolate the culprit. I just found that it is only happening with chromium running as a single page link from the taskbar. Not resolved, but thanks for the help.