Paraview 5.8.0 UI elements are too large

In Paraview 5.8.0, the UI elements look too big for the screen (1920x1080). There's not much screen space left for the actual data rendering. Not sure what this is... perhaps toolbar controls margins are too large?
Also, I would say that font rendering looks a bit weird. The shortcut underlines are twice thicker that in the previous version.
I tried playing with screen DPI setting, but it doesn't seem to change anything.

For comparison, here's what Paraview 5.7.0 looks like. The render view icons could have been slightly larger, but everything else was of a good size.

OS: Linux Ubuntu 18.04