I disagree. I use P4V (Qt-based) regularly. Its lists are quirky and sometimes don't scale property with the OS DPI settings.
I have no idea if this is the case with P4V, but it absolutely is the case with a few other things I use.
I'm just bitter about a couple of apps I use that are all permanently stuck on Qt4 where the vendor seems to have zero intention of caring to ever update them to a newer version of Qt. And ever since getting a HiDPI display, this has been continuously irritating me.