The solution filter is empty

[ArabellaQi]

Describe the Issue

The solution filter is empty.

Steps To Reproduce

1.Create a C# Console App then a less-solution will be opened.
2. New a .sln or .slnx solution file.
3. Configure a solution filter file and open it, observe the SE.

Expected Behavior

The solution filter should correctly display the configured content, such as the C# Console App in the steps.

Environment Information

.NET Install Tool: Pre-release 3.0.0
C# Dev Kit Extension: Pre-release 1.93.22
C# Extension: Pre-release 2.115.3
.NET SDKs:  10.0.102 and 10.0.200-preview.0.26079.118
VSCode Insider: 1.109.0
Platform: Windows X64 

[claudiaregio]

@ArabellaQi can you show me what you get in the .slnf file if you do this with Visual Studio? Do you mean you're not seeing what you expect in the Solution Explorer only? Or that the .slnf file itself doesn't have the content you would expect?

[ArabellaQi]

@claudiaregio the issue is: the project I configured does not appear in the Solution Explorer, normally, it should display as shown in the picture below, that is, whatever project I have configured, the filter should display that project.