fix tooltip coordinate

Author: bdjulbic

src/components/src/map-container.tsx

@@ -858,12 +858,19 @@ export default function MapContainerFactory(
         getCursor?: ({isDragging}: {isDragging: boolean}) => string;
       } = {};
       if (primaryMap) {
-        extraDeckParams.getTooltip = info =>
-          EditorLayerUtils.getTooltip(info, {
-            editorMenuActive,
-            editor,
-            theme
-          });
+          // Omit hover updates when the pointer position is invalid, ie. over UI overlays or
+          // outside the map container. In those cases x/y may be < 0
+          extraDeckParams.getTooltip = info => {
+            const x = Number(info?.x);
+            const y = Number(info?.y);
+            if (Number.isNaN(x) || Number.isNaN(y) || x < 0 || y < 0) return null;
+
+            return EditorLayerUtils.getTooltip(info, {
+              editorMenuActive,
+              editor,
+              theme
+            });
+          };
 
         extraDeckParams.getCursor = ({isDragging}: {isDragging: boolean}) => {
           const editorCursor = EditorLayerUtils.getCursor({