In SQL Developer 18.1 can't view/edit columns with type 'XMLTYPE'.
Edit value (pencil) content is empty - but part of conent is visible in grid.
With previously used SQL developer ( Version 17.4.1.054 Build 054.0712), it worked.
Is this bug, or have I to configure sth to view xmltypes in 18.1 ?
It's a known bug.