I did have problems with disconnecting pins, it was “self” node that return passing of the value ( A to C to B, then c to B to A) where ABC has same value which is “self” or “reference to self nodes”
after i fix it the problem seems to gone, i tried restarting the project and engine couple of times and it’s ok then i save the project, turn off the PC, and go for rest
then the problem came back the next day, when i start the engine again, this time, more pins are disconnected. I put this issue in the answerhub
hopefully someone can share some solution, otherwise i need to remove all Struct from my project and try to use different way. Which is quite painful in this stage