I just noticed, adding a particle emitter, add another one and parented that to the first, then try and click on itsīproperty to enter emitter settings, neither does the emitter window popup, nor does it expand to show itself beneath.
What I have to do is switch to the first emitter and click on that so itīs emitter properties pops up, then switch to the child emitter and only then it will show up, this I do not think is normal.