Harbinger of Direction buff override

Buff disappears as soon as another buff appears. Phasing, flask buff, anything will override harbinger buff. I have tested it, and it's not just buff icon visuals, skill changes as soon as Directions buff is gone.

Same here, any flask buff or phasing from Quartz Infusion on kill removes the buff. Even refreshing existing buffs seems to remove it - such as recasting a golem, killing another monster for quartz infusion or using a utility flask that still has time left on the duration.

Update: Casting or cancelling auras / heralds do not override the harbinger buff.

It happens with the Harbinger of Focus buff as well. It seems to be a thing with all of the Harbingers buffs.

I'm also having a problem where the buff will just disappear after 2 seconds. This is in my hideout without any additional buffs.

Can anyone confirm that the buff is actually working? I haven't noticed any difference when mapping using the Harbinger of Directions.