Razor formatting fails

[ArnoudK]

When trying to format a .cshtml file the formatting fails with a pop-up that says: "Request to textDocument/formatting failed." This is the output in 'Razor Log':

[Info  - 4:00:06 PM] Returned 34 semantic tokens for range Microsoft.VisualStudio.LanguageServer.Protocol.Range in file:///home/USER/Code/SOLUTION_NAME/PROJECT_NAME/Areas/Dashboard/Pages/matcher/Creator.cshtml.

Entering method textDocument/foldingRange.

Entering method textDocument/codeAction.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method razor/mapToDocumentRanges.

Entering method textDocument/foldingRange.

Entering method textDocument/codeAction.

Entering method textDocument/formatting.

[Error - 4:00:08 PM] [null]

[Error - 4:00:08 PM] Request textDocument/formatting failed.

  Message: Specified argument was out of the range of valid values. (Parameter 'Range end line 23 matches or exceeds SourceText boundary 23.')

  Code: -32000 

[object Object]

When I tried formatting a different cshtml file it also fails. With 140 instead of 23 (the file had 140 lines). So I assume somewhere a check for lines has a off by 1 bug. Other razor language features seem to work fine. Dotnet: 8.0.301 Node: v22.2.0 Code OSS: 1.90.1 611f9bfce64f25108829dd295f54a6894e87339d x64 free-vscode-csharp: Last released 2024-06-01