Razor files do not respect C# code style new line rules

[benittech]

Performing an auto-format on a razor file adds new lines to C# code everywhere and does not respect C# > Code Style > Formatting > New Lines.

Even if all the "New line options for braces" are turned off, it behaves as if they were all turned on.

This has only started happening after updating to VS 17.12.2. Updating to 17.12.3 did not fix the issue.

Previously auto-formatted C# code in .razor file:

Newly auto-formatted code:

Settings:

[davidwengier]

This was caused by a Roslyn bug, fixed in dotnet/roslyn#76066 in v17.13