Fix the multimap when moving a window from/to an empty workspace

minimap.js

@@ -185,6 +185,9 @@ Minimap = new Lang.Class({
             this.layout(false);
             let frame = this.space.selectedWindow.get_frame_rect();
             this.sync(frame.x, false);
+        } else {
+            // We're in an empty workspace so can just remove what's left
+            this.minimapActor.remove_all_children();
         }
     },
 

tiling.js

@@ -198,6 +198,9 @@ insertWindow = function(space, metaWindow, index) {
     space.splice(index, 0, metaWindow);
 
     if (index == 0) {
+        // If the workspace was empty the inserted window should be selected
+        space.selectedWindow = metaWindow;
+
         let frame = metaWindow.get_frame_rect();
         metaWindow.scrollwm_initial_position =
             {x: primary.x + (primary.width - frame.width)/2,