5.51 - just installed two days ago.
This is running on a plain vanilla HP Laptop that is about 3 years old and it has all the latest updates but it is connected to two other monitors.
Just to be clear, I just running the program, then grabbing it by the corner and resizing.
But if it is just my laptop I won't worry about it.
I have a new clean Win 10 I haven't even configured yet. I will boot it up and see what happens there.