Moving the SplitContainer splitter size at runtime crashes the DemoConsole application.

[Nora-Zhou01]

.NET version

.Net 8.0 SDK: 8.0.100-preview.7.23328.8

Did it work in .NET Framework?

Yes

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

No, This is the new SplitContainer integration test added to the DemoConsole application.

Issue description

In Winforms repo, there has a DemoConsole test app, the DemoConsole application crashes when moving the SplitContainer splitter size in .Net 8.0. But build and run the application in Release and Debug modes gives different results.

Release mode：

demo.mp4

Debug mode:

degug.mp4

Call stack:
System.StackOverflowException
HResult=0x800703E9
Message=Exception of type 'System.StackOverflowException' was thrown.

Steps to reproduce

Test sample: DemoConsole in Winforms repo

More Info

1. Resizing other controls or forms in the DemoConsole application also crashes.
2. Probably caused by the PR 9364

[elachlan]

The underlying bug is caused by #9341

[halgab]

Really sorry I let that slip through...

[elachlan]

It happens. It wasn't obvious to me either until I tested it. At least it was an easy fix!

[Eudora-Li01]

Verified this issue in the latest .NET 8.0 SDK build: 8.0.100-preview.7.23356.13 on winforms repo, it was fixed. SplitContainer splitter and other controls can be moved in size now.

SplitContainerMove.mp4

[Amy-Li03]

Verified this issue on winforms repo with DemoConsole test app from release/8.0-preview7 branch, it was fixed. Test result is same as above.