I have created a custom Wordpress (5.6) widget named "Server" which can be added to all sidebars without any problem:
But when I try to add the widget to a page content with the editor this widget does not appear in the list of available widgets. What do I miss?
The "widgets" in the editor are a type of Block, not "true" Widgets, like the ones listed in Appearance > Widgets. Each of these types of widget are developed completely differently, so there isn't a way to add true widgets as blocks or vice versa, and any added to one section will not automatically appear in the other.
Yes, this is needlessly confusing.
