I encountered this myself. The 9S minion did not appear in some of my runs from "The Tower at Paradigm's Breach."

Quote Originally Posted by KDSilver View Post
9S was not a 100% drop at first.
Now, it's still not guanranteed, but instead of fightning your roll with 23 others people, it'll only be with your own alliance.
That's what it actually means.
Neither were the Pod 316 from Copied Factory nor the 2B Automaton were guaranteed drops when they came out. However, when the patch notes to make the minion and orchestrion drops per party for the previous Yorha alliance raids, both Pod 316 and the 2B Automaton were always seen in their respective loot lists.

This time, the 9S Automaton minion did not follow this rule for the patch 5.5 alliance raid.

Quote Originally Posted by Alchalant View Post
The patch was supposed to unlock Tower at Paradigms Breach the same way Copied Factory and Puppets Bunker had been previously in 5.5 - where Yoshi had said in 5.5 live letter that the Copied Factory and Bunker rare minions would be much more easily obtainable.

After he said this in live letter - upon the 5.5 patch - Copied Factory and Puppets Bunker were given 3 final coffers - one for each party in the raid. All 3 of these coffers for each party now (as of 5.5) contain both the normal and rare minions, and all orchestrion rolls in the first 2 alliance raids. All possible loot now always appears in the final coffers of Copied Factory and Puppets Bunker.

This ticket is to raise attention because Tower at Paradigms Breach was similarly unlocked on 5.58 but the loot is not behaving in the same way as the adjustments on the other raids. They made the 3 party coffers but overlooked adjusting the loot table of each.

I hope this makes this clear. Players that farm and collect these items noticed this immediately. They were anticipating Tower being unlocked similar to the other 2 alliance raids - and the patch notes said the raid would be unlocked the same way the last 2 were - and they did add the 3 separate coffers but overlooked adjusting the loot tables.
This is the best answer in this thread so far.