[regression: 5.13 -> 5.14] HiDPI broken on Linux with Xft.Dpi

Hello,

Arch Linux upgraded its packages to 5.14, which seems to have broken Xft.dpi-based DPI handling.

I attached two screenshots of the same app, shown with three DPI settings (96, 144, 192).

Notice that for DPI == 144 in 5.13 every icon, widget, QGraphicsScene and text is scaled properly, while on 5.14 only the text is scaled.

For DPI == 96 and 192 it works fine because I guess that we get an actual devicePixelRatio == 1 or == 2 ?