@brogr I had to clear the cache. Did you?
Version 1.2.3 works. Thanks, @arminunruh!
Gridder disappeared after updating to Version 1.2.1 and Wordpress 5.7.2
Is there any way to modify the <a> tag surrounding an element, like e.g. adding data attributes?
The Formats button in the text editor is not showing anything due to the z-index of the panel and its background (100001 & 100000).