(Reposted on the correct account)
Bursting Lightshard, the intellect trinket that drops from Priory of the Sacred Flame keeps randomly despawning 1 second after it is used in most areas. Open world, Delves, Dungeons. It is particularly bad in dungeons like The Dawnbreaker where the trinket despawns roughly 80% of the time, almost making it useless.
Although this trinket isn’t in the current M+ rotation, it might be worth fixing the despawning issues before next season, when the trinket is likely to be in rotation.