Is there any research on the behavior of lists in rich text editors?

Lists involve a number of behaviors which seem inconsistent among most popular rich text editors in the market (Medium, Word, Google Docs, CKEditor, Froala, Wordpress classic, Wordpress Gutenberg, etc).

For example:

• What should happen when a user presses Enter on empty item that is also the last item in the list?
• What should happen when the user presses Backspace and the cursor is at the start of a list item?
• What should happen when user presses Backspace on a paragraph before a list?
• Etc.

Is there any research on these?