Nested ordered list gets corrupted using classic editor

Hi,

I have been experiencing something strange with nested lists. I am not sure what the root cause is.

I have already reported the issue at the Gutenberg project’s GitHub site. Please see the links below:

https://github.com/WordPress/gutenberg/issues/28754

https://wordpress.org/support/topic/nested-ordered-list-gets-corrupted/#post-14004340

However, I thought I should report it here also.

Can you please help to resolve this issue. Is the root cause WordPress/Gutenberg or is it the Classic Editor plugin? Is there a solution?

Thanks!