diff --git a/packages/coding-agent/test/suite/regressions/5433-extension-oauth-prompt-input.test.ts b/packages/coding-agent/test/suite/regressions/5433-extension-oauth-prompt-input.test.ts
index 482f0440d..777239f69 100644
--- a/packages/coding-agent/test/suite/regressions/5433-extension-oauth-prompt-input.test.ts
+++ b/packages/coding-agent/test/suite/regressions/5433-extension-oauth-prompt-input.test.ts
@@ -19,7 +19,13 @@ function createDialog(): LoginDialogComponent {
 }
 
 function renderDialog(dialog: LoginDialogComponent): string[] {
-	return stripAnsi(dialog.render(120).join("\n"))
+	// stripAnsi keeps APC sequences, so drop the TUI's zero-width cursor markers (e.g. \x1b_pi:fc\x07) first
+	return stripAnsi(
+		dialog
+			.render(120)
+			.join("\n")
+			.replace(/\x1b_[^\x07]*\x07/g, ""),
+	)
 		.split("\n")
 		.map((line) => line.trimEnd());
 }