Hi! I hope it's alright to post this here...
I use KDE and have had absolutely no problem with it (thanks Manjaro devs!) I have one little niggle, though: I have the taskbar on the top of the screen and, as a result, the taskbar's shadow is drawn over application windows. This problem is minute and I barely notice it, but it would look just that little bit better if it was possible for windows to cover that shadow.
PS: I already know to use
xprop -remove _KDE_NET_WM_SHADOW for a temporary effect, but I don't want it removed completely - I just want windows to cover it.)