diff --git a/src/vs/editor/contrib/stickyScroll/browser/stickyScrollController.ts b/src/vs/editor/contrib/stickyScroll/browser/stickyScrollController.ts
index dc7f7154279..1b2a3a7b305 100644
--- a/src/vs/editor/contrib/stickyScroll/browser/stickyScrollController.ts
+++ b/src/vs/editor/contrib/stickyScroll/browser/stickyScrollController.ts
@@ -469,6 +469,7 @@ export class StickyScrollController extends Disposable implements IEditorContrib
 	private async _renderStickyScroll(rebuildFromLine: number = Infinity) {
 		const model = this._editor.getModel();
 		if (!model || model.isTooLargeForTokenization()) {
+			this._foldingModel = null;
 			this._stickyScrollWidget.setState(undefined, null, rebuildFromLine);
 			return;
 		}
diff --git a/src/vs/editor/contrib/stickyScroll/browser/stickyScrollWidget.ts b/src/vs/editor/contrib/stickyScroll/browser/stickyScrollWidget.ts
index c7cc2beaa63..2a326c0baac 100644
--- a/src/vs/editor/contrib/stickyScroll/browser/stickyScrollWidget.ts
+++ b/src/vs/editor/contrib/stickyScroll/browser/stickyScrollWidget.ts
@@ -439,15 +439,6 @@ export class StickyScrollWidget extends Disposable implements IOverlayWidget {
 		return isInLine !== undefined;
 	}
 
-	/**
-	 * Given a child dom node, tries to find if it is (contained in) a sticky line number.
-	 * @returns a boolean.
-	 */
-	isInStickyLineNumber(domNode: HTMLElement | null): boolean {
-		const isInLineNumber = this._getAttributeValue(domNode, STICKY_IS_LINE_NUMBER_ATTR);
-		return isInLineNumber !== undefined;
-	}
-
 	/**
 	 * Given a child dom node, tries to find if this dom node is (contained in) a sticky folding icon.
 	 * @returns a boolean.