fixed activation bug

cvat-ui/package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

cvat-ui/package.json

@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "CVAT single-page application",
   "main": "src/index.tsx",
   "scripts": {

cvat-ui/src/components/annotation-page/standard-workspace/canvas-wrapper.tsx

@@ -571,7 +571,7 @@ export default class CanvasWrapperComponent extends React.PureComponent<Props> {
                     canvasInstance.fit();
                 }
             }
-            if (activatedState.objectType !== ObjectType.TAG) {
+            if (activatedState && activatedState.objectType !== ObjectType.TAG) {
                 canvasInstance.activate(activatedStateID, activatedAttributeID);
             }
             const el = window.document.getElementById(`cvat_canvas_shape_${activatedStateID}`);