Two titlebar buttons shown which do not align

Hey guys! I’m new to manjaro-kde and have been trying my hand at customization. I installed kvantum-manjaro and messed around a bit. Now two sets of title-bar buttons are shown (one behind another) for certain applications like firefox and pacman manager. It does not occur when Firefox title bar is enabled but only when it is not. Unable to embed screenshot for some reason. Please help. :slightly_smiling_face:

In case anyone else is facing this issue its something to do with GTK themes. Its also the same thing that causes some applications to have another theme from the global one.
Settings>Appearance>Applicatiion Style> Configure GTK themes to change the GTK theme to the suitable one

Was already discussed here


and here