Preview mode has unexpected message in the information bar "You are using an unsupported command-line flag"

[yhatt]

Version of Marp Tool

Marp CLI v2.0.0

Operating System

Windows

Environment

• OS version: Windows 10
• Node.js version: v16

How to reproduce

1. Convert Markdown with preview mode (--preview).

Expected behavior

There is not a information bar in the window. (macOS has this behavior)

Actual behavior

Shows this message in a information bar:

You are using an unsupported command-line flag: --enable-blink-features=DocumentTransition. Stability and security will suffer.

DocumentTransition itself is working correctly.

Additional information

Adding --test-type option to Chrome arguments can hide this navigation bar.