1 files changed, 2 insertions, 1 deletions
diff --git a/src/client/views/nodes/trails/PresBox.tsx b/src/client/views/nodes/trails/PresBox.tsx
index 4ff816812..17993d88e 100644
--- a/src/client/views/nodes/trails/PresBox.tsx
+++ b/src/client/views/nodes/trails/PresBox.tsx
@@ -1,7 +1,7 @@
 import * as React from 'react';
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
 import { Tooltip } from '@mui/material';
-import { action, computed, IReactionDisposer, observable, ObservableSet, reaction, runInAction } from 'mobx';
+import { action, computed, IReactionDisposer, makeObservable, observable, ObservableSet, reaction, runInAction } from 'mobx';
 import { observer } from 'mobx-react';
 import { Doc, DocListCast, FieldResult, NumListCast, Opt, StrListCast } from '../../../../fields/Doc';
 import { Animation } from '../../../../fields/DocSymbols';
@@ -72,6 +72,7 @@ export class PresBox extends ViewBoxBaseComponent<FieldViewProps>() {
 
     constructor(props: any) {
         super(props);
+        makeObservable(this);
         if (!PresBox.navigateToDocScript) {
             PresBox.navigateToDocScript = ScriptField.MakeFunction('navigateToDoc(this.presentation_targetDoc, self)')!;
         }