Thank you @bbollin
I tried several times in our ArcGIS Portal, but the delete button does not show when I click in the ellipsis.
Thanks
I am unable to reproduce that issue @SanchezNuñez. Do you own the data? Are you seeing this with all pop-up text elements?
Found a way to see the delete button. Zoom out in the Web Map and then it shows the "delete" button after scrolling down.
@SanchezNuñez, looks like this issue was fixed in 11.2. Thanks! If you use FireFox in 11.1 it also should work