OP, I think being curious about why your BP is sleeping in the open makes sense. They often hide.
Is this a new behavior?
How are you checking your temps? Are you using an IR Temp Gun?
My initial thoughts were that temps are off and/or hides are not appropriate.
Assuming temps are good and checked accurately, I would guess that the hides are not appropriate. Hides should be snug and secure. I am a fan of plastic hides like these https://www.reptilebasics.com/large-hide-box.
They are easy to clean and secure.
A BP wants safety and the ability to thermoregulate. They should not have to pick one over the other. Double check temps and get appropriate hides and see where you are at.
Good luck and keep us posted.