diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 1f51a0fbf..391f1b252 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -21,6 +21,9 @@
 ### Fixed
 
 - Fixed long `ask` option labels being hard-truncated at the terminal width with no way to read the clipped tail; the rich ask dialog now wraps labels onto indented continuation lines, matching the legacy selector ([#1243](https://github.com/can1357/oh-my-pi/issues/1243), [#8594](https://github.com/can1357/oh-my-pi/issues/8594)).
+### Fixed
+
+- Fixed toggling `display.showTokenUsage` from `/settings` leaving existing token-usage rows stale until the transcript was rebuilt.
 
 ## [17.3.4] - 2026-08-14
 
diff --git a/packages/coding-agent/src/modes/controllers/selector-controller.ts b/packages/coding-agent/src/modes/controllers/selector-controller.ts
index d2c5cd788..61f00c31c 100644
--- a/packages/coding-agent/src/modes/controllers/selector-controller.ts
+++ b/packages/coding-agent/src/modes/controllers/selector-controller.ts
@@ -562,6 +562,12 @@ export class SelectorController {
 				this.ctx.rebuildChatFromMessages();
 				this.ctx.ui.resetDisplay();
 				break;
+			case "display.showTokenUsage":
+				// Rebuild reruns usage-row detection under the new setting; resetDisplay
+				// retires rows already committed to native scrollback.
+				this.ctx.rebuildChatFromMessages();
+				this.ctx.ui.resetDisplay();
+				break;
 			case "tui.tight":
 				setTuiTight(value as boolean);
 				this.ctx.ui.invalidate();
diff --git a/packages/coding-agent/test/selector-settings-side-effects.test.ts b/packages/coding-agent/test/selector-settings-side-effects.test.ts
index 82c220278..0bf313358 100644
--- a/packages/coding-agent/test/selector-settings-side-effects.test.ts
+++ b/packages/coding-agent/test/selector-settings-side-effects.test.ts
@@ -166,6 +166,25 @@ describe("selector setting side effects", () => {
 		});
 	}
 
+	for (const enabled of [false, true]) {
+		it(`rebuilds the transcript when display.showTokenUsage=${enabled} changes in /settings`, () => {
+			const rebuildChatFromMessages = vi.fn();
+			const resetDisplay = vi.fn();
+			const controller = new SelectorController({
+				rebuildChatFromMessages,
+				ui: { resetDisplay },
+			} as unknown as InteractiveModeContext);
+
+			controller.handleSettingChange("display.showTokenUsage", enabled);
+
+			expect(rebuildChatFromMessages).toHaveBeenCalledTimes(1);
+			expect(resetDisplay).toHaveBeenCalledTimes(1);
+			expect(rebuildChatFromMessages.mock.invocationCallOrder[0]).toBeLessThan(
+				resetDisplay.mock.invocationCallOrder[0],
+			);
+		});
+	}
+
 	it("clears stale default role thinking when auto is selected", async () => {
 		const testTheme = await getThemeByName("dark");
 		if (!testTheme) throw new Error("Failed to load dark theme for model selector test");