This a well known wayland limitation.
The workaround (till the pkexec -> policykit transition is made) is to use xhost script.
Gparted already has an opened bug: https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/1652282
and policykit has to be used, but is not directly concerned as a bug.
This a well known wayland limitation. /bugs.launchpad .net/ubuntu/ +source/ gparted/ +bug/1652282
The workaround (till the pkexec -> policykit transition is made) is to use xhost script.
Gparted already has an opened bug: https:/
and policykit has to be used, but is not directly concerned as a bug.