[Bug] Completely messed up extended function keys (F13-24) binding

Running on Arch Linux, XFCE4 and X11. Using the stable AUR package. Someone already did a similar report, but it was most likely ignored. For some reason, when binding any key to F13-24, none of them doesn't work like they should. F13 is recognized as XF86Tools; F14 is recognized as XF86Launch5; F15 is recognized as XF86Launch6; F16 is recognized as XF86Launch7; F17 is recognized as XF86Launch8; F18 is recognized as XF86Launch9; F19 actually recognizes itself normally for some reason; F20 is recognized as XF86AudioMicMute; F21 is recognized as XF86TouchpadToggle; F22 is recognized as XF86TouchpadOn; F23 is also recognized normally; F24 is recognized normally too.