Editing a formula in the formula bar should preserve newlines, not replace with #(lf)

Using the Power Query formula bar to edit something like this:

= (_TimelineWithParent as any) => let
Initial = _TimelineWithParent,
#"Add initial pidx" = Table.DuplicateColumn(Initial, "parentIndex", "pidx"),


Might result in:

let
Source = #!"(_TimelineWithParent as any) => let#(lf) Initial = _TimelineWithParent,#(lf) #""Add initial pidx""

That is a heavily escaped string that now only looks right in the formula bar.

Formula bar and Advanced Editor should always agree...