The powders are supposed to interact with the glass, but they are not doing so, they act as if it is DMND.
I was gonna say it's not a glitch, but then I erased some of the glass up top XD
its not a glitch, its just an odd feature
is it really a glitch i mean its not looping becaus theres no space aka the top is glass blocking anywhere it can move the bombs and dmg to with the loop