Is there currently any way to add custom tasks for mass AI in state trees? or some workaround that would allow mass AI to have similar functionality to regular AI?
did you find a way ? I’m also very interested in knowing this. I cannot create a C++ class of FMassStateTreeTaskBase from the unreal UI anyway 
So i can do it manually in C++ and not through any UI. Now i just have to figure out how to communicate with the “regular” actor world to the entity world
Didn’t find a way and had to set the project aside, I’m hoping to try to get back to it after life gets a little less busy so probably will try some things in a month or so