As far as I know due to common mark specs a list either has to be completely numbered or must consist of bullets. While playing around with deckset app I discovered that bear actually can display mixed list.
When you copy such a text …
… into bear, you will get that result:
You would have to ask what other result. That fulfils my expectation.
But with a little fiddling you even can write such mixed lists in bear as you can see in the video:
Now the question: If bear can read, display and write such mixed lists, is there any reason not to make it easier for the user to write them? When I create a bullet after a number the number could be deleted automatically. I definitely would use such mixed lists.