29.0.3 is the buggiest I have had for Isolation Vault

[EinarTheRed]

Necramech's don't spawn.
Vault's Requiem Crystal doesn't spawn.
Necramech's shield lasts forever unless you Void Dash it off (Previously had like 20 - 30 second timer)
Start of Necramech fight disables all abilities.
Void Dashing through Necramech disables warframe abilities
Necramech's target through invisibility for 1-5 seconds after a warframe turns invisible 
Necramech's pick arms up immediately after losing it, giving no time to do actual damage
Necramech's use shield over and over again the moment it is taken off.
Warframe abilities disable other warframe abilities during the fight (Shooting an arrow from Ivara's quiver disables her Prowl for no reason) This eventually goes away mid fight.
Crash when you solve the necramech puzzle in one of the fights and attempt to bring the nechramech through the portal
Edit: Still have never seen a single Scintillant during any of the 3 vaults.

None of these issues were present at launch for me.

[TheStratovarian]

The insta-shield necramech just kills it for me, dont get me started on the grenade range being far larger than the explosion visual too.
 

[Karonuva]

I can't even void dash during the necramech fights

[BhruicDearg]

I can't even void dash if I've even seen a necramech at any point during a mission.

[FantasticalSpider]

the operator not working is the most frustrating thing ever