Drawing info is not applied for layer within a group layer within map

[QAAccount]

I have a map in the MapServer that contains a group layer as shown here. When I add it as a layer inside Map Viewer, I get a dotted line where the drawing info on my layer (lines_for-advanced_symbols_1) is not applied.

 "drawingInfo": {

  "renderer": {

   "type": "simple",

   "symbol": {

    "type": "esriSLS",

    "style": "esriSLSSolid",

    "color": [

     0,

     0,

     0,

     255

    ],

    "width": 3.4

   }

  },

However, when I add only the layer by itself to the map viewer, it is rendered with its drawing info and renders as a solid line.

Is this expected, why is the drawing info not used when it is added within the map?

[RussRoberts]

Yup this is expected. When adding it as a MapServer url the rendered line is coming from the server in an exported image which can give you that dashed symbol. When you use the direct layer url like MapServer/2 it gets treated as a feature layer and the symbol can be the simplified renderer. You can use vector symbols from a web style to style the MapServer/2 case to look like the exportedImage scenario.