more-info: last-changed tooltip has inconsistent transparency

[ildar170975]

Checklist

• I have updated to the latest available Home Assistant version.
• I have cleared the cache of my browser.
• 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

In more-info popup, a tooltip is shown for last-changed.
The tooltip has different transparency for different entities.
Examples below.

counter:

update:

automation:

sensor:

vacuum:

Describe the behavior you expected

Transparency should be same for any entity.

Steps to reproduce the issue

as above

What version of Home Assistant Core has the issue?

2025.3.0

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue?

Chrome 134.0.6998.36, FF 135.0.1

Which operating system are you using to run this browser?

Win10x64

State of relevant entities

Problem-relevant frontend configuration

Javascript errors shown in your browser console/inspector

Additional information

No response