For example, I click on 1st level Cure Wounds. Then click on 2nd level Cure Wounds after that, the spell level doesn't update to 2nd level. It stays at the first level clicked and will cast at the 1st level slot.

Hmm interesting. Also if you do up cast the spell then click on the lower level version, it will still display the up cast.

(You can still select higher level slots by using the + and - buttons)

I see the issue. When you do not close the sidebar in between selecting the spell at different levels, it does not change, correct? Can you let me know if it does change if you click off the side-bar, first?

As DxJxC explains, there is a (-) and (+) sign in the sidebar to allow you to change the cast level of the spell in the sidebar. :)

Ah, I guess this may not be a bug if a user is intended to use the (+) and (-). I mean I physically scroll down in the spell list to click on a different level spell while the sidebar is still open. I did not use the (+) or (-) to increase/decrease the spell level. Let me know if that makes sense.

Yes, that is the issue. It does not change when I click out of the sidebar to close it, then click on a different level of the same spell.

I was also closing the side bar and the previously selected casting level carried over.