Yesterday Evelynn and Glenda explored the entrance of the lycan caves.
Glenda tried to Banish a lycan: it didn't disappear, even if he stopped attacking for a moment when the VFX for disappearing creatures fired. When Banishment ended the lycan was forced to the old location (a few steps away from Glenda, as it charged).
Also, DImension Door worked with no restrictions inside the caves. (Don't know if it's expected or if it should be blocked, given the text message on entering the caves.)