@Conscious_Fold i can guarantee you that is not the case. as stated i'm running the plata theme (plata-noir) to be specific and qbittorrent is not theming when it should. plata does theme everything else on the system. on a side note i'm running mint 19.1 64 bit, kernel 5.0.5.
It depends on the Qt css/theme/engine, not KDE theme.
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