Widget displays incorrect value for power sensors above 999W

[tobiii90]

The Home Assistant widget incorrectly displays power sensor values of 1000W or above. Only the first digit before the decimal separator is shown. For example, a value of 2448W is displayed as 2W in the widget. Values below 1000W are displayed correctly.
This feature is currently in beta (displaying entity states in widgets).
Steps to Reproduce
1. Add a power sensor entity (device_class: power, unit: W) to a widget
2. Ensure the sensor value is above 1000W
3. Observe the widget displaying only the first digit (e.g. 2448W → 2W)
Expected Behavior
The widget should display the full value, e.g. 2448 W
Actual Behavior
The widget displays only the first digit before the decimal point, e.g. 2W instead of 2448W. Values below 1000W are displayed correctly.
Environment
∙ Device: iPhone 16 Pro
∙ iOS Version: 26.3
∙ Companion App Version: 2026.2.1 (2026.1766)
∙ Home Assistant Core: 2026.2.3
∙ Supervisor: 2026.02.2
∙ Operating System: 17.1
∙ Frontend: 20260128.6
∙ Installation Method: Home Assistant OS
Entity Configuration
∙ Integration: KNX
∙ DPT: 14.056 (Power, 4 Byte)
∙ device_class: power
∙ state_class: measurement
∙ unit_of_measurement: W
Additional Notes
A template helper sensor with | int conversion (removing decimal places) displayed the correct value briefly after creation, but reverted to showing 2W shortly after. This suggests a possible widget caching issue combined with the value truncation bug.

[bgoncal]

I was trying to reproduce it but I couldn't, can you long press the widget, then toggle to show the last update time, then the widget will start showing at what time it was last refreshed, then compare to home assistant to see if the values are really different? Sorry it this may sound obvious and you have already tried, I'm just covering the basics.

[tobiii90]

I have recorded the data again in screenshots. Under 1000W everything is fine and as soon as it goes over it, he rounds up the thousands.

I have already tried to create a template helper for the widget to round the value to whole watts without a comma, this has also not brought success.

[bgoncal]

Ok, my screenshot above was a helper as well, guide me, how did you setup your helper? Just so I do the same and find how to reproduce it

[tobiii90]

{{ states('sensor.hauptzahler_wirkleistung_gesamt') | float | round(0) | int }}

[bgoncal]

Did I miss something? If my setup is correct, can you try the TestFlight version of the app (aka beta)?

[tobiii90]

I've tried something. With the sensor widget it works. I only have the problem with the custom widget.

Which one did you test?

[bgoncal]

Custom widget

[tobiii90]

I installed the test flight version, but nothing has changed. Is there anything else I need to know about this version?

[bgoncal]

Not really, can you tell me what {{ states('sensor.hauptzahler_wirkleistung_gesamt') }} outputs? just so I know we are templating the same

[tobiii90]

Or what do you need?

[bgoncal]

There must be something we are doing differently....

[bgoncal]

Ok, found it! I had not set device_class and state_class, now I can reproduce. I'll fix it