A few quest battle has abnormally low gear score

Platform, device and operation system

What were you expecting to happen, and what actually happened
When I playing the first side quest chain of Guard, i thought it will give me two challenging battles, but the second battle just throw three Lv.1 enemies on my face.

How often does this happen? When did it begin happening?
Don’t know. maybe a broken setting.

Steps to make it happen again
I cannot replay the side quest but I guess everyone played it will encounter the same problem.