Also seen on Bionic (gedit 3.28)
oem@ubuntu:~$ sudo gedit /etc/default/grub [sudo] password for oem:
** (gedit:5355): WARNING **: 13:47:44.894: Set document metadata failed: Setting attribute metadata::gedit-spell-language not supported
** (gedit:5355): WARNING **: 13:47:44.894: Set document metadata failed: Setting attribute metadata::gedit-encoding not supported
** (gedit:5355): WARNING **: 13:47:54.587: Set document metadata failed: Setting attribute metadata::gedit-position not supported
Also seen on Bionic (gedit 3.28)
oem@ubuntu:~$ sudo gedit /etc/default/grub
[sudo] password for oem:
** (gedit:5355): WARNING **: 13:47:44.894: Set document metadata failed: Setting attribute metadata: :gedit- spell-language not supported
** (gedit:5355): WARNING **: 13:47:44.894: Set document metadata failed: Setting attribute metadata: :gedit- encoding not supported
** (gedit:5355): WARNING **: 13:47:54.587: Set document metadata failed: Setting attribute metadata: :gedit- position not supported