Regardless if temps are in the proper range. BP's will stay where ever they feel safe/secure/comfortable. My BP likes to stay in his cool side hide area way more than the hot side area. Even though the temps in the hot-side area is in the appropriate range. They'll just regulate their temperature when they feel like it. Just as long as the husbandry is well kept, and he/she is eating fine, then your BP should be pretty happy.