Reveal range after editor is initialized.

src/vs/workbench/contrib/notebook/browser/contrib/notebookFindWidget.ts

@@ -226,4 +226,9 @@ export class NotebookFindWidget extends SimpleFindReplaceWidget {
 			this._allMatchesDecorations = accessor.deltaDecorations(this._allMatchesDecorations, deltaDecorations);
 		});
 	}
+
+	clear() {
+		this._currentMatch = -1;
+		this._findMatches = [];
+	}
 }

src/vs/workbench/contrib/notebook/browser/notebookEditor.ts

@@ -317,6 +317,7 @@ export class NotebookEditor extends BaseEditor implements INotebookEditor {
 		this.notebookViewModel = undefined;
 		this.webview?.clearInsets();
 		this.webview?.clearPreloadsCache();
+		this.findWidget.clear();
 	}
 
 	private async attachModel(input: NotebookEditorInput, model: NotebookEditorModel) {
@@ -563,6 +564,7 @@ export class NotebookEditor extends BaseEditor implements INotebookEditor {
 	}
 
 	async deleteNotebookCell(cell: ICellViewModel): Promise<void> {
+		(cell as CellViewModel).save();
 		const index = this.notebookViewModel!.getViewCellIndex(cell);
 		await this.notebookService.deleteNotebookCell(this.notebookViewModel!.viewType, this.notebookViewModel!.uri, index);
 		this.notebookViewModel!.deleteCell(index, true);

src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts

@@ -252,7 +252,9 @@ export class NotebookCellList extends WorkbenchList<CellViewModel> implements ID
 			this.view.setScrollTop(lineOffsetInView - this.view.renderHeight / 2);
 
 			if (revealType === CellRevealType.Range) {
-				element.revealRangeInCenter(range);
+				setTimeout(() => {
+					element.revealRangeInCenter(range);
+				}, 240);
 			}
 		};