1 files changed, 11 insertions, 11 deletions
diff --git a/src/client/views/collections/CollectionNoteTakingViewColumn.tsx b/src/client/views/collections/CollectionNoteTakingViewColumn.tsx
index 38846c79d..db178d500 100644
--- a/src/client/views/collections/CollectionNoteTakingViewColumn.tsx
+++ b/src/client/views/collections/CollectionNoteTakingViewColumn.tsx
@@ -36,15 +36,13 @@ interface CSVFieldColumnProps {
     yMargin: number;
     numGroupColumns: number;
     gridGap: number;
-    type: 'string' | 'number' | 'bigint' | 'boolean' | 'symbol' | 'undefined' | 'object' | 'function' | undefined;
     headings: () => object[];
     select: (ctrlPressed: boolean) => void;
     renderChildren: (docs: Doc[]) => JSX.Element[];
     addDocument: (doc: Doc | Doc[]) => boolean;
     createDropTarget: (ele: HTMLDivElement) => void;
     screenToLocalTransform: () => Transform;
-    observeHeight: (myref: any) => void;
-    unobserveHeight: (myref: any) => void;
+    refList: any[];
     editableViewProps: () => any;
     resizeColumns: (headers: SchemaHeaderField[]) => boolean;
     maxColWidth: number;
@@ -78,15 +76,18 @@ export class CollectionNoteTakingViewColumn extends ObservableReactComponent<CSV
 
     createColumnDropRef = (ele: HTMLDivElement | null) => {
         this.dropDisposer?.();
-        if (ele) {
-            this._ele = ele;
-            this._props.observeHeight(ele);
-            this.dropDisposer = DragManager.MakeDropTarget(ele, this.columnDrop.bind(this), this._props.Document);
-        }
+        if (ele) this.dropDisposer = DragManager.MakeDropTarget(ele, this.columnDrop.bind(this), this._props.Document);
+        else if (this._ele) this.props.refList.slice(this.props.refList.indexOf(this._ele), 1);
+        this._ele = ele;
     };
 
+    componentDidMount(): void {
+        this._ele && this.props.refList.push(this._ele);
+    }
+
     componentWillUnmount() {
-        this._props.unobserveHeight(this._ele);
+        this._ele && this.props.refList.splice(this._props.refList.indexOf(this._ele), 1);
+        this._ele = null;
     }
 
     @undoBatch
@@ -289,11 +290,10 @@ export class CollectionNoteTakingViewColumn extends ObservableReactComponent<CSV
 
     render() {
         TraceMobx();
-        const heading = this._heading;
         return (
             <div
                 className="collectionNoteTakingViewFieldColumn"
-                key={heading}
+                key={this._heading}
                 style={{
                     width: this.columnWidth,
                     background: this._background,