Minor issue: Trial of the Sekhemas no rare monster spawning

Hey there,
on floor 2 of the trial of the Sekhemas in a specific layout of the hourglass room do no rare monsters spawn during the whole trial. It is the only hourglass room where no rare monsters spawn, so im guessing this is not intended behaviour. It makes this hourglass room much worse than other ones, and it takes much longer as you cant advance the timer like rare monsters normally do.

bump - floor 2 hourglass room