Blazor components not colorized correctly when .razor file is first opened in VS Code

[danroth27]

When I open a new Blazor Web App project in VS Code with the latest C# extension bits and then open a .razor file, the component tags don't get colorized correctly. There aren't any squiggles. The components just don't have the right semantic colors. I first see the tags get recognized as HTML, then squiggles show up saying the tags aren't recognized as components, then the squiggles go away, but the component tags stay colorized as HTML. If I then edit the file, or switch to a different file, the correct semantic colorization shows up.

.NET: 8.0.303
VSCode: 1.91.1
C# extension: v2.38.12-g916fe8dd31 (PR build from @ryzngard)

[ryzngard]

I filed microsoft/vscode#221423 because I think this is actually a vs code bug? Will investigate if we can do anything here.

In the mean time scrolling/editing/etc apparently fixes it