String switch is odd using betterC

[Abby]

On Wednesday, 26 February 2020 at 08:25:00 UTC, Abby wrote:
> Any idea why?

Ok so this is enough to produce the same result, it seems that 
there is a problem in string switch when there is more the 6 
cases.

extern(C) void main()
{
     auto s = "F";
     final switch(s)
     {
         case "A": break;
         case "B": break;
         case "C": break;
         case "D": break;
         case "E": break;
         case "F": break;
         case "G": break;
     }
}