Regarding To-Do list and partially solved problems

All questions in DEC19B which I attempted and got right are added in to-do list.
I didn’t even add them. And in some questions when I fully solve a question after solving it partially
it still shows partially solved at my user profile.

problem regarding partially solved isn’t in DEC19B but in practice problems

I am also facing this issue currently after solving the question correct, it is showing partial.