Answer is still correct even if some texts are removed from the right answer

Bugs
#1

I tried removing parts of the text before submitting but still keeping the important parts of the code. With some letter missing, I was still able to submit my answer and collect coins.

Screenshot 2021-01-20 at 2.18.04 PM
Screenshot 2021-01-20 at 2.18.04 PM803×663 45.4 KB

#2

Same with this. I tried removing " in line 2. My answer was still accepted.

Screenshot 2021-01-20 at 2.29.49 PM
Screenshot 2021-01-20 at 2.29.49 PM802×636 36 KB

#3

this task is a lesson(or lecture) and it’s not practice(that student’s answer is important), so a student can try and see the result, and we don’t check the correctness of the answer as of now.

#4

noted. this is practice and that shouldn’t happen,
I’ll check it.