1 files changed, 6 insertions, 6 deletions

diff --git a/src/client/util/BranchingTrailManager.tsx b/src/client/util/BranchingTrailManager.tsx
index a224b84f4..11f16493f 100644
--- a/src/client/util/BranchingTrailManager.tsx
+++ b/src/client/util/BranchingTrailManager.tsx
@@ -1,4 +1,4 @@
-import { action, computed, observable } from 'mobx';
+import { action, computed, makeObservable, observable } from 'mobx';
 import { observer } from 'mobx-react';
 import * as React from 'react';
 import { Doc } from '../../fields/Doc';
@@ -15,13 +15,14 @@ export class BranchingTrailManager extends React.Component {
 
     constructor(props: any) {
         super(props);
+        makeObservable(this);
         if (!BranchingTrailManager.Instance) {
             BranchingTrailManager.Instance = this;
         }
     }
 
     setupUi = () => {
-        OverlayView.Instance.addWindow(<BranchingTrailManager></BranchingTrailManager>, { x: 100, y: 150, width: 1000, title: 'Branching Trail'});
+        OverlayView.Instance.addWindow(<BranchingTrailManager></BranchingTrailManager>, { x: 100, y: 150, width: 1000, title: 'Branching Trail' });
         // OverlayView.Instance.forceUpdate();
         console.log(OverlayView.Instance);
         // let hi = Docs.Create.TextDocument("beee", {
@@ -30,11 +31,10 @@ export class BranchingTrailManager extends React.Component {
         // })
         // hi.overlayX = 100;
         // hi.overlayY = 100;
-        
+
         // Doc.AddToMyOverlay(hi);
         console.log(DocumentManager._overlayViews);
     };
-    
 
     // stack of the history
     @observable private slideHistoryStack: String[] = [];
@@ -69,7 +69,7 @@ export class BranchingTrailManager extends React.Component {
         if (this.prevPresId === null || this.prevPresId !== presId) {
             Doc.UserDoc().isBranchingMode = true;
             this.setPrevPres(presId);
-            
+
             // REVERT THE SET
             const stringified = [presId, targetDocId].toString();
             if (this.containsSet.has([presId, targetDocId].toString())) {
@@ -98,7 +98,7 @@ export class BranchingTrailManager extends React.Component {
 
         const newStack = this.slideHistoryStack.slice(0, removeIndex);
         const removed = this.slideHistoryStack.slice(removeIndex);
-        
+
         this.setSlideHistoryStack(newStack);
 
         removed.forEach(info => this.containsSet.delete(info.toString()));