Editing not possible in Column
1. By creating a column I've inserted a course presentation. In this presentation I want to add a table. I'm not able to edit the table unless I first click on "update". Then the mask for editing a table appears but I'm not able to edit anything (see GIF). The page updates without my changes. The same happens when adding a link.
2. Wordpress Version 5.4
5. H5P Plugin Version 1.15.0
6. Content Type Column (cf. attachment)