Components within a panel are not positioned correctly at runtime if scrollbar is visible.

[KieranDevvs]

.NET version

7.0

Did it work in .NET Framework?

Not tested/verified

Did it work in any of the earlier releases of .NET Core or .NET 5+?

No response

Issue description

If components are anchored within a panel, and the scroll bar for the panel is NOT visible when loading the form, the components are positioned correctly.
If components are anchored within a panel, and the scroll bar for the panel IS visible when loading the form, the components are shifted to the left by the same number of pixels the scroll bar is wide.

Example of when the scrollbar is visible before loading the form:

Example of when the scroll bar is not visible before loading the form, but the form is resized to make the scroll bar visible after the fact:

Steps to reproduce

1. Create a blank form
2. Add a panel and dock it to the form.
3. Add a component, resize it to the width of the panel and anchor it (Left, Top, Right).
4. Set the panel to automatically show the scroll bar.
5. Resize the form within the designer to make the scroll bar appear.
6. Run the application and observe the difference between the designer and the running form.

[JeremyKuhne]

@Olina-Zhang can you check to see if this is a regression? Thanks!

[KlausLoeffelmann]

Could you guys also check, if this is a doup of #9740?
It might very likely be related to it.

[Olina-Zhang]

@JeremyKuhne @KlausLoeffelmann It isn't a regression issue, also repro in .Net framework 4.6.2 to 4.8.1 as following screenshot, see red rectangle area in runtime, compared with design time. This issue is not a dup of #9740, because #9740 is a regression issue from .Net 8.0.

[dreddy-work]

Given this has been the issue since 4.6.2, removing the priority label and moving to 9.0