Is Hidden Lair bugged or it is intended feature?

Last time when the host found a hidden lair and entered it and then only invited others to the party, and summoned them to walk to the hidden lair to enter it.

But after the Tempest Update, every time I was invited and summoned to the hidden lair by the host who was already inside the lair, I couldn’t enter the lair anymore.

Initially after a few attempted to enter the lair, I convinced myself that the hidden lair just closed for open too long . Still, after so many times I joined the party to enter the lair manually, the lair always closed and gone despite the host telling us it was just recently spawned and he entered it ASAP and then only invited us.

Something doesn’t seem right now. Is the hiddle lair bugged or you guys changed it?