"Wrap chained method calls" settings affects members after indexer

Hello. I have setting "Wrap chained method calls" is set by "Chop always" value. Link to .DotSettngs file

Options -> Code Editing -> C# -> Formatting style -> Line Beaks and Wrapping -> Arrangement of Member Access Expressions -> Wrap chained method calls = Chop always

It works good for methods:

//Before cleanup
var isFoo = scriptsFolder.ToLower().Trim().StartsWith("foo");

//After cleanup
var isFoo = scriptsFolder.ToLower()
                         .Trim()
                         .StartsWith("foo");

 But I have indexers in code. And this setting effects them:

//Before cleanup
var conString = ConfigurationManager.ConnectionStrings["Db"].ConnectionString

//After cleanup
var conString = ConfigurationManager.ConnectionStrings["Db"]
                                    .ConnectionString

I don't want the member ConnectionString to be relocated to new line. Say me, please, what should I do to achieve it?

Thank you.