Plasma 5.27 - GTK apps - fractional scaling - X11 - eviltoast

I’m running the latest plasma with X11 (Arch). Fractional scaling is working fine with all the qt based apps but I’m experiencing size issues with gtk apps (Lutris or VMware for ex.). Fonts are rendered ok but scaling is not correctly applied to window and icons (titlebar is too small). Is there some kind of workaround? Under wayland things were running smoothly. Thanks