Hi Eren ,
Thank you for contacting syncfusion support.
DocumentEditorContainer doesn’t have support for access and customize the predefined toolbar and properties pane. Properties Pane working on context-based switching. whether the selection is in the table at that time “Table Properties Pane “has been open. text properties pane does the same.
DocumentEditorContainer Component is also used to create, view and edit word document. But here, you can use predefined toolbar and properties pane to view and modify word document.
Refer below documentation link:
Note: You can able add the custom pane out of the document editor container.
We are suggesting use “Document Editor” instead of Document Editor Container.
DocumentEditor Component is used to create, view and edit word documents. In this, you can customize the UI options based on your requirements to modify the document.
Refer the below documentation link
Regards,
Kurthis Banu A.