I noticed that on some sites when I edit (in back end) an article the article is not locked as it should be. If I edit the article with joomla (legacy mode) the lock is back so I guess the issue is somehow related to the joomla/seblod integration.
Hello I've noticed the same problem on a website in development. In frontend custom admin, I've got a Seblod list & search for custom articles. When one user connected edits one article, it isn't locked (no change in check_out table). So any user can edit same article at the same time... Did you find any solution to this problem ? Does anyone notice that ? I use Joomla 3.9.18 and Seblod 3.18.2
THe lock is not working in frontend from the beginning (and it's quite annoying) but it should work in backoffice. Cyril does it happen on specific configuration or since a specific upgrade of J! or Seblod ? I will check with Pierrette on ours projects :-)