Detonate Dead is unplayable in Ritual map

everytime i open a ritual totem , my Detonate Dead skill has a 50/50 chance of not activating on my minions, which is really annoying.
noway to survive when this happen , there's alot of report long time ago but while this still not fix yet ?

I have the same problem. I'd argue it's even less than 50/50, if I don't start casting before I click the tree I can't cast at all. It has led to many needless deaths, to the point where ritual is basically unplayable for me.