ObjectPage: Content adds too large empty section when headerArea autocollapse (when scrolled)

[aleksaToljic]

Describe the bug

When the user starts scrolling, headerArea collapses, and a large section is added above the content

Isolated Example

https://stackblitz.com/edit/github-sr4l8x?file=src%2FApp.tsx

Reproduction steps

1. Start scrolling slowly

Expected Behaviour

Content to not jumb down

Screenshots or Videos

UI5 Web Components for React Version

2.4.0

UI5 Web Components Version

2.4.0

Browser

Chrome

Operating System

macOs Sequoia 15.1

Additional Context

No response

Relevant log output

No response

Organization

TronIT

Declaration

• I’m not disclosing any internal or sensitive information.

[aleksaToljic]

I have a fix for this, it's pretty straightforward.
The problem is that we add position: absolute to headerArea, when it's collapsed, and it looses it's width, so it looks like this (when I remove visibility: hidden)

Solution for this would be to add left: 0, right: 0 or width:

I can create PR if needed.