Display problems in the app on iPhone

Hi,
I’ve only recently started using HA.
I’ve now created a special iPhone view in lovelace, but it’s not displayed correctly in the app. The symbols in the tiles are missing.
If I open the same view in Safari on the iPhone, everything is displayed correctly.

View in the app on the iPhone

View in Safari on the iPhone

Are these custom or core cards?

it is the standard panel map, the view is a custom:vertical-layout.

Sorry, the what?

Which card?

There is also an icon missing on the homepage.


title: Home
type: panel
cards:
  - type: vertical-stack
    cards:
      - type: horizontal-stack
        cards:
          - show_name: true
            show_icon: true
            type: button
            tap_action:
              action: navigate
              navigation_path: /dashboard-iphone/rollladen
            entity: cover.rolladen_buro
            name: Rolläden
            hold_action:
              action: navigate
              navigation_path: /dashboard-iphone/rollladen
type: custom:vertical-layout
title: Lampen
cards:
  - type: vertical-stack
    cards:
      - type: vertical-stack
        cards:
          - type: horizontal-stack
            cards:
              - type: light
                entity: light.deckenstrahler_flur
                name: Decke
              - type: light
                entity: light.shelly1_treppenhaus_shelly_sw
        title: Flur
      - type: horizontal-stack
        cards:
          - type: vertical-stack
            cards:
              - type: horizontal-stack
                cards:
                  - type: light
                    entity: light.deckenstrahler_kueche
                    name: Decke
                  - type: light
                    entity: light.hue_lightstrip_plus_1
                    icon: ""
                  - type: light
                    entity: light.hue_lightstrip_plus_1_3

Please format a code in all your posts.

It is crucial for a support, not just for aesthetics.

Also - just in case - clear a cache on your mobile.
In Companion app: companion app settings → debug → reset frontend cache