Hello Jose,
I have tried deactivating all the plugins. First in batches, then one-by-one, and nothing seems to work.
I have used Google Chrome on a Mac, I have tried Safari on a Mac.
The browser doesn’t seem to be the issue. It seems to be WordPress itself.
It is almost as if the buttons are missing a link of code to the rest of the pieces, like when I click on a link, I can give a URL to it, but when I try to then go into advanced settings to make it “_target” open in a new window, it just stops.
Thank you for helping!