I can't reproduce this on my end so not sure what's going on. Isn't "auto" a better option, though? You wouldn't want to edit non-Seblod content with Seblod, no?
Understood. Does choosing "auto" not do the trick for you? It does on my end. Meaning, if the article was created with Seblod, clicking the Joomla edit button will open the Seblod edit form (vs. the normal Joomla article edit form).