Silent Glowies in 'Rise of the Vampyri' Mission Arc

[Zephyr Star]

I was running the "Rise of the Vampyri" arc via Ouroboros and as I went through the missions I noticed that the mission objectives (glowies) weren't making their usual sound to aid in finding them. I haven't come across this in any other missions. I'm not sure if this is a bug just for this arc. I checked all my audio settings in game and on my PC as well as restarting and it was still happening. I was able to complete the missions fine. I thought I would mention this anyway!