Problem bug card designer

Good evening everyone,
I don’t know if any of you have encountered this problem, but when I copy a line of code and paste it, it keeps the information from the previous card. It creates duplicates and when I check the code, there is nothing. I had to redo the process from scratch for each card, a real waste of time.

@Whittfield , little bug, do you think you know the reason for the phantom duplicates?
other problems when I test the responsive, we have the texts centered from the SM size for some card while it is aligned on the left. I don’t understand this new bug.