[FIXED] [Warlock][Demonology]Dark Apotheosis vs Mastery procs EXPLOIT

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WoW Freakz spell link: https://www.wow-freakz.com/spells.php?spell=114168&&name=dark-apotheosis

Bug description: Dark Apotheosis is the spell gained from the glyph https://www.wow-freakz.com/spells.php?spell=63303&&name=glyph-of-demon-hunting . Using Dark Apotheosis it should giving the warlock 13.85% physical damage reduction, this amount is scalling with MASTERY and 15% magic damage reduction and threat generation, the last 2 are remaining the same, they are not influenced by mastery.
The bug is at physical damage reduction part vs mastery scalling. When you use any source to gain mastery procs: https://www.wow-freakz.com/spells.php?spell=113858&&name=dark-soul-instability , trinkets that proc mastery, enchants and with the procs of mastery gaining abilities still up you use Dark Apotheosis, the amount of physical damage reduction will be scalled with that mastery but after the PROCS will fade, Dark Apotheosis will fail to update resulting in HUGE physical damage reduction that will remain on warlock permanently until he decides to switch the stance. Short story long the effect of Dark Apotheosis should update dynamic and not do snapshot to the mastery procs that is scalling with the physical reduction part of the spell.
This is a game breaking bug in PVP, demo warlocks can stack mastery procs and almost solo do the arena vs melee dps. I suspect that are other bugs at Demonology, i also posted the https://forum.wow-freakz.com/Warlock-Demonology-Hellfire-Immolation-vs-Arena-LOS-t449956.html and we all know the insane damage that demo are doing right now in pvp.
Some warlocks continuously make abuse of this exploit, Resq de tine vorbesc da-ti-ai ultima suflare pe postu' asta, breaking the PvP.

Steps for repro:

1. I put on the Glyph of Demon Hunting


2. The "clean" buff from Dark Apotheosis


3. I removed the Dark Apotheosis, I casted Dark Soul, I use DA again with the mastery scalling proc from DS


4. After the proc faded, the buff do not updated, resulting in huge physical damage reduction until the warlock decides that melee wasted their bursts.


Proofs:
https://eu.battle.net/forums/en/wow/topic/10494171247