Crypt Map Bugged

Couldn't finish my corrupted boss map because the middle part of the map was inaccessible with two rare monsters there. Maybe caused by Ritual on the map? or common bug?
Hopefully will be fixed.

edit

I did another Crypt map and same layout. Again same problem, no mechanics (rituals etc) and one rare monster middle area and it is inaccessible can't complete the map

Still bugged as the date of 14.01.26.

minimap shows there are smal tiny itti bitty pathways but there are smal walls blocking the entrence.