How to create a table of contents with Roman numeral page numbers?

Dear Onlyoffice team,

I am using Onlyoffice Desktop Editor at the moment and it works flawlessly. However, I do not know how to create a table of contents with Roman numeral page numbers in the Office suite. When I insert a page number, I can choose either Arab number( 1,2,3,4,5,…) or Roman number( I, ii, III,IV, V,…), but creating a table of contents only shows all the heading in Arab numbers. I attached a sample document below.
My system is ChromeOS and Onlyoffice which was installed by Linux terminal. I also gave a try on the online version but everything was the same.
New document.docx (48.1 KB)

Thank you for your support,

Hello @annavan,
We are checking, please wait

Currently, there is no way to create a table of contents with Roman page numbers, it is linked to a bug, we’ll be working on it