I want your opinion on this issue. I submitted a paper to Journal A. It had been with the editor for two months without being sent to peer review. So, I sent a withdrawal email to the editor. I waited for few days to get an email back, but I thought it is already done since I informed them. Then, I sent the paper to Journal B. It was sent to peer review after two days of submission.
Recently, I checked the online submission system of journal A, and they did not withdraw the paper, they actually sent it to peer review four days ago (three months from submission to intitiang peer review, which is too long in my field); I noticed that they have a new editor. Now, the paper is under review in two journals, which I know it is misconduct, but I assumed that the paper was withdrawn because I sent an email requesting that. What do you think I should do?