Metrics battery SoC does not update when page left displayed

[travellingkiwi]

Describe the bug
On the metrics tab, the battery SoC is displayed and at the time of opening the metrics tab, the SoC is correct and agrees with the battery SoC in the menu bar

However if the metrics are left displayed, all the sensors update, except the battery SoC. It is left on the original values

Expected behaviour
The battery SoC on the metrics page should update in conjunction with all the other sensors being updated

Predbat version
8.42.1, and 8.42.5

Environment details

• Fronius Gen24+ 6kW with 13.8kWh of BYD HV battery in a single stack
• Standard HAOS installer

Screenshots

Log file
Can you capture a log file from the time of the issue, debug mode is not normally required.

You can download the logfile from the WebUI on the Dash tab select predbat.log

Predbat debug yaml file
This is important for any plan related issues.

Once you have captured the issue go to the Web UI, in the Dash tab click on predbat_debug.yaml and wait 30 seconds for it to download. Select 'keep' if your Web Browser thinks the file is dangerous.

Rename the download file to predbat_debug.yaml.txt and upload it to GitHub. This will allow your plan to be reproduced and also stores all your settings for review.

[chalfontchubby]

🤖 Claude Code - fix in flight.

Found it: the SoC doughnut chart's center text is drawn by a Chart.js plugin that closed over the values from when the chart was first created, so it never updated on subsequent refreshes even though the underlying chart data (and every other card on the page) did. Fixed in #4288 (bundled with a couple of other small fixes - happy to split it out if preferred).