Avatars doing 0 damage

Game mode: Online.
Problem: Bug.
Region: A base built in the cliffs near the entrance to The Arena.

Yesterday, in PvP server 1312 at 17:05 CEST, I unleashed Yog upon a Tier 3 base that also had some parts made of Tier 2 and Tier 1 crafts —in fact, this picture (https://i.imgur.com/XlMRwPn.jpg) was taken with my mobile when I made the first hit and dates from 17:04h—.

I managed to score three hits over it, which should’ve been enough to ruin their walls and ceilings, as well as some foundations. Instead, I got 0 damage made (not even one tier 1 foundation broke).

I cannot find a logical explanation as for why this happened: I was in raid time on a PvP server. I even checked various CEST timers just in case.

EDIT: Moreover, their thralls did die with Yog’s attacks.

Steps on how to reproduce issue:

  1. Farm Yog.
  2. Unleash it in raid time.
  3. ???
  4. Profit no damage made.