It seems that the KDE folk upstream have made available a replacement
for the desktop cube effect.
I'm told it's at https://github.com/zzag/kwin-effects-cube.git, but
building it for openSUSE is beyond my skills. Is there any chance that
it might be packaged and distributed for Leap and Tumbleweed as an
add-on??
--
Robin K
Wellington "Harbour City"
New Zealand