fixes #78545

src/vs/workbench/browser/layout.ts

@@ -643,7 +643,7 @@ export abstract class Layout extends Disposable implements IWorkbenchLayoutServi
 			// To properly reset line numbers we need to read the configuration for each editor respecting it's uri.
 			if (!lineNumbers && isCodeEditor(editor) && editor.hasModel()) {
 				const model = editor.getModel();
-				lineNumbers = this.configurationService.getValue('editor.lineNumbers', { resource: model.uri });
+				lineNumbers = this.configurationService.getValue('editor.lineNumbers', { resource: model.uri, overrideIdentifier: model.getModeId() });
 			}
 			if (!lineNumbers) {
 				lineNumbers = this.configurationService.getValue('editor.lineNumbers');