presianbg Try to delete the ~/.cache folder and double check if /usr/lib64/qt5/plugins/styles/libqgtk2style.so is the rebuilt one (check the timestamp on the file).
I have actually deleted ~/.cache 😃
libqgtk2style.so seems fine
EDIT: also try to start it like that QT_QPA_PLATFORMTHEME="gtk2" qbittorrent and check if it makes any better.
qbittorrent starts with a very long delay, but it makes it better, tho now we have a scaling problems like huge context menus paddings and some weird icons. This scaling problem I had before.