I think that it's not actually a bug, but it feels like it's unintended and also self-contradictory. Basically: I have Azyrran in my party. I go to the tile where Azyrran normally is. It says "Azyrran normally haunts these parts, but she's nowhere in sight... for now." Yes, that is the text for her not being there, happening in a way that I believe is intended, but at the same time, she's definitely in sight.
If the browser matters for this specific situation, it's the latest version of Firefox.
It was not merged.