Guage card causing screen rendering fault

Configuration Frontend
1

I have just noticed a severe screen rendering problem - quite weird.

Screenshot_20260517_193745_Home Assistant
Screenshot_20260517_193745_Home Assistant1920×1152 359 KB

This is on an Android tablet running the companion app. After lots of testing, I worked out it only happens on dashboards that have 1 or no gauge cards. Yes, 1 gauge card OK, 2+ gauge cards not OK.

In edit mode, the dashboards renders OK

Screenshot_20260517_193807_Home Assistant
Screenshot_20260517_193807_Home Assistant2000×1200 194 KB

On an Android phone (companion app) & on a PC, it renders OK.
Home Assistant OS, Core2026.5.2, Supervisor2026.05.0, Operating System17.3, Frontend20260429.4, Companion app 2026.4.4-full (21576)

I've restarted the tablet & HA - no improvement.

I've duplicated an offending dashboard & deleted the gauge cards - it then renders OK.

I'll note that, on one dashboard, I have 2 gauge cards wrapped in a custom:config-template-card which renders OK.

Any ideas?

2

The card yaml is standard

type: gauge
entity: sensor.state_of_charge_fronius_storage_0_192_168_1_24
name: BYD HVS Battery SoC
segments:
  - from: 0
    color: "#ff0b00"
  - from: 10
    color: "#ffff00"
  - from: 45
    color: "#00cc00"
needle: true
grid_options:
  columns: 6
  rows: auto
theme: slate
3

If I run HA in a browser, on the tablet, it renders correctly.

On the face of it, this suggests the companion app is the issue but the app was updated in April and hadn't errored until now. HA also runs correctly, via the app, on two Android phones - just the tablet that has the issue.

??

4

99% frontend cache issue. Helped someone with identical background artefacts & clearing the cache fixed it.

Open the companion app settings page. Clear cache is 1 of the options under troubleshooting

5

Thanks for the suggestion. Cleared the cache (twice) as well as full shutdown & restart but no change - still rendering as explained above.

6

Found this reference which looks very similar Graphical artifacts / horizontal stripes in Home Assistant Android app after Android System WebView update · Issue #6851 · home-assistant/android · GitHub
The issue appears to lies with android system webview. Yet to try the suggested fix.

7

To fix, I went to : settings - google - Android system webview
Then I hit the remove updates button. When done, I hit the update button.

Then I reopened the HA companion app & rendering was fixed.

1 Like