New Secion Layout: less columns visible compared to Masonry

[Bastian007]

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

After dashboard "migration" from Masonry to the new Sections,
a Fire tablet 10 with Fully Kiosk Browser is showing only 2 instead of 3 columns,
with setting Max number of sections wide = 3

Masonry:

Sections:

While editing 3 columns are visible.

Native resolution of the Fire table is 1920 x 1200 pixels

Does Sections have a diffwerent margin and padding than Masonry?

Describe the behavior you expected

Width for Section layout is the same as for Masonry.

Steps to reproduce the issue

n/a

What version of Home Assistant Core has the issue?

2025.2.2

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue?

Fully Kiosk Browser

Which operating system are you using to run this browser?

Android OS

State of relevant entities

Problem-relevant frontend configuration

Javascript errors shown in your browser console/inspector

Additional information

No response