Edit window is too high and it can't be reduced. Option to set the height is gone. Height can be reduced in Firefox.
Report at w:no:Wikipedia:Torget#Høyde i redigeringsvindu, wikitekst.
Verified to be like the user said.
Not all users have large monitors, and a whole lot of users are editing from small laptops. If the option is removed, then text elements with changed heights must be remembered on each device.