add Star rating for modern experience List
If adding star rating to a Sharepoint List in modern experience, its Form (edit / Add new item) will switch bach to classic form.
Please change ;-)
For more information see as well discussion with office support
Three years later, this should be a must have to professionalize the UX while using SPO lists.
Greg Hagar commented
Being able to use the modern form for adding new items to modern lists with rating column enabled would be much nicer than having to use the classic 'add new' form in this one instance only.