Hi Mieszko, sorry for the delay in reply. My project was kind of unstructured and big back then. Stripping it down seemed like a lot of work. And I was occupied with some other design changes and UMG stuff. I just got back into Behavior Trees today and after converting my project to 4.7 P8, this issue still seems to be there. I just checked for other similar cases online, and I came across this link:
compare blackboard entries between vectors
It seems two other people went through the same issue while working on BT. So I’m guessing that this is a bug. I will try it out on a new project some time this week.