habPanel n RPI and Linux Server (Ubuntu 16.04)

i just installed openHAB2, with openhabian, on a dedicated Linux Server with Ubuntu and started to port my config from RPI to that server.
what i noticed is that the grid somehow seems to be different. for example the dashboard icons are bigger as well as some of my templates.
is there a reason for that and can this somehow be fixed?
I have this with the latest stable and snapshot version alike.