fix #10338

src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingActions.ts

@@ -98,6 +98,11 @@ registerAction2(class RemoveFileFromWorkingSet extends WorkingSetAction {
 				order: 5,
 				group: 'navigation'
 			}],
+			keybinding: {
+				primary: KeyCode.Delete,
+				when: ContextKeyExpr.and(ChatContextKeys.location.isEqualTo(ChatAgentLocation.EditingSession), ChatContextKeys.inChatInput.negate()),
+				weight: KeybindingWeight.WorkbenchContrib,
+			}
 		});
 	}