I’m running Home Assistant Dashboard on an old android tablet (Android 4) with Kiosk Mode extension as a Web App. After some time data gets stale. In that case, tap on every control causes an error: “connection error”. After that error appears, web page seems to reconnect again, data is updated and all controls are working again as expected.
User settings for “Close connection automatically” is disabled (off). Home Assistant version is currently 2023.9.2