fix

src/graphic/Service/UIService.js

@@ -82,6 +82,7 @@ export default class UIService {
       return true;
     } else if (ui == UIEvents.FreeMeasureLine) {
       this.setSelectLineCategory(VectorCategory.Line.FreeMeasureLine);
+      return true;
     } else if (ui == UIEvents.BaseLine) {
       this.setSelectLineCategory(VectorCategory.Line.BaseLine);
       return true;