7:05 AM, Sunday January 3rd 2021
I can only answer this based off of what I intuitively feel is correct. I would say that it's not something you want to have happen, but it's also not something for you to worry too much about. Theoretically, if you were to draw a perfect ellipse, your entire stroke, from start to finish, should be a part of the ellipse and you wouldn't have any jutting "appendages". That's why I think you don't want to have that happen, but it's pretty normal if it does, because we're obviously not perfect. This probably also depends on how serious the jutting is, but I looked over your ellipses again and I don't think it's that noticeable of an issue.
Ultimately, it's probably better to focus on the qualities emphasized by the lesson e.g. smooth, even shapes. I would imagine this is a problem that will go away as you become more experienced, or it'll at least be something you can work on as you practice ellipses for warm-ups. I don't think you should let it hold you back from moving forward in the lessons. Also, I believe the example homework posted in the ellipses section of Lesson 1 also contains the same type of jutting. If it's even in the example, I'm sure it's expected that students will make similar kinds of mistakes!