after upgrading to 12.3 we encounter two problems. The first is that when pressing (in German) “Bearbeiten” (could be editing in english) a in page editor comes up that enables editing of the page.
The default is set to CK-Editor, but this editor is now only available when selecting WYSIWYG Editor from the Dropdown.
The second Problem is that when the in page editor is used all German umlauts are corrupt during editing . Looks like an encoding problem.