Dear @Maksym Shevchenko,
Thank you for posting your question in the Microsoft Q&A forum. I understand that you want to type lines in a Word comment that begin with "- " without Word automatically turning them into a bulleted/indented list.
In Modern comments, you can select text and use the Home tab to apply basic formatting: bold, italic, underline, strikethrough, font color, and highlighting. However, changing font size, applying styles, or adjusting paragraph settings is not currently supported.
Besides what Stefan Blom suggested, I recommend the steps below
1/ Temporarily switch to legacy comments
Go to File > Options > General, clear “Enable modern comments,” then restart Word. Microsoft notes this switch is temporary.

2/ Use a dash that does not trigger lists: insert an en dash (–) by Ctrl + (-) or use Insert > Symbol.
For more information: Using Modern comments in Word
Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.
I truly appreciate your patience and understanding. If you have any further questions or need further clarification, please feel free to reach out. I'm looking forward to hearing from you.
Thank you for your cooperation.
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