Betrayal BUG : "encouter failed/abandoned" before the map even starts

Hello,

I have had an issue with Betrayal for the past few days, ever since I started using Betrayal scarabs (for Jun to appear). When I enter a map, without me making a single movement, it says for example "fortification encounter abandoned".

Sometimes it says "Research members have retreated to their safehouse" and I haven't even found the entrance to the encounter.

I hope it is clear enough,
Thanks in advance !