The other day when I went to submit a link it tried to submit a link post and a text post at the same time, resulting in a self post that I could not delete. I made it work in another post by clicking the text header and then the link header. Here is an illustration: https://i.imgur.com/4Vx7qi9.png
Anyone else run into this problem? It seems to be fixed for me now. I can also delete posts now too.