Sepulchre map boss "Doedre the Defiler" did not drop Eldritch Altar promised reward (4.038.545.003)

https://imgur.com/a/Kr5Szec

While running Sepulchre, an Eldritch Altar offered me "Final Boss drops 3 additional Divine Orbs". This naturally had my eyes go big as dinner plates. The penalty was harsh - effectively I would do just 20% of my usual damage, and this was a juiced, corrupted map. Still, I couldn't possibly deny this.

Imagine the look on my face when, after winning that grueling fight, the three divine orbs did not in fact drop.

To be clear: this map had the "Area contains two Unique Bosses" modifier, and I am well aware that the copy is not supposed to drop anything. What I am saying is, that zero divine orbs dropped. None at all. From neither boss.

The above imgur link shows the bug report reference number, the map mods, the active Eldritch Altar modifiers, and the remaining pile of loot with me holding Alt, to prove that my loot filter did not hide them. There's a second screenshot in the gallery showing my inventory open, proving I didn't accidentally pick them up.

The arena is sealed during the fight, to my understanding until both copies of the boss are dead, so I don't think I failed to kill one. The arena unlocked, the map reported completion, I got a master mission and loot and everything.

The relevant reward was from the last of three altars I encountered, but I did encounter it outside of the sealed boss area, and I selected the reward before entering the sealed boss area.

I was told that Doedre might transform into a frog after death that can also be killed, but I am fighting with Storm Brands and Crackling Lance; I am pretty sure that anything hostile in the blast zone would have been toast, and the map did show 0 monsters remaining. I blasted the entire arena a few times just to be sure, to no avail.

I think I remember correctly getting an Eldritch Altar promised drop in a different map that also had the "two unique bosses" modifier. Mind you, my memory is hazy, but I think that happened at least that one time. I don't know why it failed this time.

This is probably some weird and unintended interaction between stuff this specific boss does and/or the duplication mechanic, but I can only speculate.

Hope this helps!

A quick bump, since I originally posted this on a weekend.

One final bump for visibility, then it shall rest.

probably the boss' phases are actually two monsters that shares the same hp , the phasing is actually teleporting so that the loot dropped to vacuum or the hidden room in the map....

this same thing just happened to me in 3.25 settlers league, Sepulchre Map, Doedre boss, altar that was supposed to make the final boss drop 3 grand eldritch ichors.

bumping it up, still happening.

Just had a similar experience. Boss was supposed to drop 3 Div cards which reward basic currency. No cards dropped.

Same issue in Basilica boss, expected 6 harvest scarabs

Same issue in Sepulchre - Missing 3 Grands Ichors and 4 greaters