Grievous & Volcanic affix Vs Skovald shield

[Doctor Who]

WoW Freakz link: https://www.wow-freakz.com/spells.php?spell=193743&&name=aegis-of-aggramar

Bug description: When the shield bearer uses it and has grievous afix DOT (or a volcano spawns under it) , the shield cancels its effect. Sometimes the visual is also cancelled, sometimes the visual stays on and u get hit by ragnarok although you are within the protected area.

Proof: Easy to test, could use some other player's help here, don't reject it for a few days till I come up with a video proof or someone else helps out.

[Grazzia]

I didn't saw it with grev yet quaking is definitely bugged there, HoV keys are often skiped(especially if it is tyrannical) due to this bug when quake is up. When quake affix came for the first time this bug was addressed as fixed but its just not fixed at all until recently.
About volc, it also removes the shield if the tank gets one from a ranged(acutally this is a bug with volc affix itself, it should not spawn if you are close to the boss regardless your spec).

[palosipetya]

I've seen this happen with quaking, we've tried timing the pull right so that we won't get quaking when he casts Ragnarok, but on higher mythic keys its not doable. Quaking cancels the shield.