Anchor resource errors in ProgressDialog.resx Resource Explorer

[John-Qiao]

.NET version

Latest winforms repo main branch.

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

Cannot load resource value for ButtonCloseDialog.Anchor, Labellnfo.Anchor and ProgressBarWork.Anchor in ProgressDialog.resx's Resource Explorer manager.

Steps to reproduce

1. Clone https://github.com/dotnet/winforms main branch and launch it in VS
2. Double click on ProgressDialog.resx to open its Resource Explorer
3. Check the values for ButtonCloseDialog.Anchor, Labellnfo.Anchor and ProgressBarWork.Anchor

More info: it's a feedback ticket from https://developercommunity.visualstudio.com/t/Issues-with-new-Resource-Manager/10819644.

[Zheng-Li01]

The issue also can reproduce with the Language, Dock, RightToLeft etc. properties as below screenshot.

Form1.resx file info:
Form1.txt