Hi Milan,
Syncfusion Greetings!
We suspect the reported scenario because enableLocaPaste options is disabled in your cause. So, you cant paste content using context menu options.
## cut and copy
If you select any content, cut/copy in context menu will automatically gets enabled. Using that, you can cut and copy conten. Empty selection , it is in disabled state.
## Paste
If you enableLocalPaste as true(toolbar local clipboard option), you can paste content using context menu within Documenteditor control. Outside copied content is not paste via context menu paste options because of browser limitation. You can use keyboard short Ctrl + V to work all functionality.
Please check below documentation for reference:
Regards,
Suriya M.