Value 0 shown as 0.0 or as 0.00

[iz8mbw]

Checklist

• [X] I have updated to the latest available Home Assistant version.
• [X] I have cleared the cache of my browser.
• [X] I have tried a different browser to see if it is related to my browser.
• [ ] I have tried reproducing the issue in safe mode to rule out problems with unsupported custom resources.

Describe the issue you are experiencing

Hello. I have noticed that a value of 0 (zero) can be returned as 0 or 0.0 or 0.00 depending on the entity. So, depending on the entity, the quantity of zero decimals are shown.

Well, a 0 (zero) value should not have others 0 decimals, so shown 0.0 or 0.00 as 0.

Thanks.

Describe the behavior you expected

If/when a value is 0 I expect to see 0 without any decimals.

Steps to reproduce the issue

...

What version of Home Assistant Core has the issue?

2024.3.3

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue with?

Chrome 123

Which operating system are you using to run this browser?

Windows 10

State of relevant entities

No response

Problem-relevant frontend configuration

No response

Javascript errors shown in your browser console/inspector

No response

Additional information

No response

[ildar170975]

I would not use a custom card to demonstrate a possible issue. Suggest to post screenshots from Dev tools & with stack Entities card or more-info windows.

[iz8mbw]

Here other screenshots, as we can see "0" or "0.0" is taken from the Entity value from Home Assistant itself.

0.0:

0:

Here I have created this below as TEST, as you can see some Entities show 0 and onther Entities show 0.0:

[joshmcrty]

This is the intended behavior for numbers on the front end. If the raw entity state has zeros after the decimal, those are displayed in Lovelace cards,etc.

[iz8mbw]

What I can tell is if I reboot Home Assistant, when it starts I can read "0.0":

Then I power-on this switch and I can read the Power:

Then I power-off this switch and Power is now "0" and not more "0.0":

I don't think the "intended behavior" is to show a different quantity of 0 as decimals when the value is simply 0.

[joshmcrty]

I should have clarified, this is the intended behavior for the frontend code. It doesn't make assumptions about how the raw data should be formatted or truncated, beyond user preference for decimal and thousands separator. Currency is a good example where dropping a trailing zero from $3.20 to $3.2 isn't a great default behavior. This issue of trailing zeroes has been brought up before and "fixed" to the current behavior.

See https://github.com/home-assistant/frontend/issues/7787. In the example you have provided with the Shelly switch, I think the integration itself may need to be updated so it is consistent with how it returns the raw state value when it is "zero." Or maybe a precision option needs to be added to the integration in core? https://www.home-assistant.io/blog/2023/03/01/release-20233/#sensor-display-precision

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