Bug Report ID: #506191221 Delirium map not working as intended.

I entered a Delirium map and want through the mirror. None of the Delirium monsters showed up I cleared the entire zone and the Delirium Meter on the left never went above zero. I used the end Delirium button on the right at the end of the map to see what would happen and nothing happened other than returning to the normal map state from the Delirium one.