VS 16.5.0. Repro: ```cs using System.Linq; using System.Threading; class C { void M() { typeof(C).GetMethod(nameof(M)); } } ``` Apply the fix: ```cs using System.Linq; using System.Reflection; using System.Threading; class C { void M() { typeof(C).GetMethod(nameof(M), BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly); } } ``` Then save, close the file, and reopen:  Maybe it's using `SyntaxFactory.LineFeed` instead of `SyntaxFactory.ElasticLineFeed`? Though I would have expected the formatter to take care of both.