I restored a backup to downgrade to 3.2. I have also disabled the visual tab and am only using the HTML tab. My existing links are still not embedding. If I create a new post or re-publish a post with a link, it is embedding. Hopefully they will stay this way since I’ve run into some problems where they would embed temporarily, then switch.
Messel, if you try turning off the HTML tab, can you tell me if it makes a difference for you? The option is under Users, Your Profile.
Thanks, Francesca