Last as a level 7 scout I tried to cast multicast II which i have mastered.
Its active so I expected i can use it. no doesn't work.
for some reason it limited to level 20 and higher. but not deactived .
However also the variant of multicast I exist, which I can't activate be cause I have multicast II activated, which is limited to level 1 and I could use.
clearly a bug not a major one. As one that can use multicast II will be past these levels quick