TrinityCore/TrinityCore — comment on commit 61866831caca9f2c980e518bf6b0b8b8691ad151
File: src/server/scripts/Spells/spell_generic.cpp line 1390
By tobmaps:

68066 aura doesn't have infinity duration (it has 30 min duration) so if you didn't refresh it then it may expire more earlier than aura that applies it.