I successfully prevented the Fial Darg from escaping their prison on Aonirs Blade and if I remember correctly I also talked to Arenor afterwards. But a few hours later I noticed that there is still a quest open that says I need to talk to Arenor. She has that blue Quest marker above her but I cannot talk to her in any way.

Anyone else got this issue? Any known fixes? It's just a side quest so I hope it will not keep me from finishing the game later on.

try to get all your heroes next to her

I already tried that but it did not help. The cursor does not run green as it does with other NPCs that you can interact with.

At least I can tell that this bug has no impact on the end-game as I have finished it successfully a few days ago.

sorry to necro this one, but the same happens to me, anyone found a fix for this one? Currently playing in coop with version 3.1.40.1