Razor file got polluted with generated C# content in the middle

[Peter-Juhasz]

I renamed the embedded (inside the component class) enum type from CreateAlertRuleStep to Step in the code-behind of this Blazor component: AddAlertSinkDialog.razor.cs and ended up with a messed up .razor file.

Somehow the content of the Razor file got deleted halfway, and from line 200 I got a 1000 line of generated code, and then a few lines of Razor at the end of the file.

(Also, as you can see only half of the occurrences got renamed while the other half did not.)

Logs:

[LSP][LanguageServer.Semantic.LSPCSharpSemanticTokensProvider] [14:11:08.0305764] We are behind the C# version which is surprising. Could be an old request that wasn't cancelled, but if not, expect most future requests to fail. We were wanting 55 but C# is at 59.
[LSP][LanguageServer.Semantic.LSPCSharpSemanticTokensProvider] [14:20:57.7551761] We are behind the C# version which is surprising. Could be an old request that wasn't cancelled, but if not, expect most future requests to fail. We were wanting 150 but C# is at 152.

I have never experienced such an issue so far, but it happens. Since I was able to do a global undo, which reverted the rename as well, I guess it was part of the same workspace edit and the root cause was the rename.

[ToddGrun]

@Peter-Juhasz -- Does this still happen in dev18 for you, particularly with cohosting turned on?

[Peter-Juhasz]

Unfortunately I was not able to try out cohosting, because when I turn it on, I get like 10-20 different error messages appear below the toolbars, that basically all language services are unavailable. As far as I know, it is due to some race condition which will be fixed in Preview 2, or in the next minor release.