To work with Bootstrap 4 I'm creating a new extension depends on Gridelements. Now I want to use it with extension "Frontend_Editing" but in an empty column I don't have a dropzone. I have followed the following tutorial, but unfortunately without success. https://gist.github.com/joekolade/674ecba5c2615901581d6c4e4c272b4a
A Dropzone will appear in code but isn't visible in frontend view.
I'm working with: TYPO3: 9.5.5 Gridelements: 9.2.0 Frontend_Editing: 1.4.6
Did anyone get it to work?