How do I get rid of these huge pixels which libre office seems to show?

when I run any program in libre office, everything is made up of huge pixels, including the fonts.
I am using a 4k uhd screen that is 27" large. Everything scales well.
All programs in KDE look fine except this one. Im running kubuntu 19.04.

I already tried to remove everything and reintsall. And I also tried do remove everything and install it from the official website. I remember that one time I had an install where i removed everything and reinstalled it and that fixed the problem, but now it doesnt. I already have the latest drivers for graphics card.