Substitute Question

[EternalJinn]

So I'm not entirely sure if this is a result of a bug or a field effect but every time I use substitute in Narcissa's gym battle after setting up the blessed field, her rotom manages to burn my pikachu through its substitute. I just need someone to help me figure out if this is a bug or if I'm just being stupid - if its a bug I can delete this and move it to the actual bug reporting thread. 

 

 

[Edo]

I had that happen in Reborn as well, it's a bug.