Sting Grenades do not always refresh disorient?

[Anonymous918]

I've reloaded a save several times to test a sting grenade on mutons who are already either stunned or disoriented, and it does not always refresh the disorient, although sometimes it does, depending on where the grenade lands. Is this a bug or intended?

[Dwarfling]

- Certain powerful enemies have a chance to ignore the effects of a flashbang

I don't have the .ini here but it's basically Mutons, Gatekeeper, General, etc. Mutons have the lowest resist