Some Qt apps consume >8gb RAM and get oom-killed?

Not sure if it’s a memory leak but when i try to start konsole, systemsettings, telegram-desktop, dolphin, ark, ktorrent and probably others, they just explode in ram and get killed by oom-killer.

system info:
arch linux
plasma 6.0.4-1
(do tell if i need to provide more info)

apparently was caused by a tokyonight icon theme, was resolved by changing ~/.config/kdeglobals