I’m opening this with the hope that there will be some sort official acknowledgement that Ulduar Hard Mode loot is broken since the removal of the 10/25 difficulty split in 7.3.5.
The transmogrification community has collected data that shows there is an issue with the way the loot is currently distributed.
Please report this as a possible bug using the ingame tool. Unfortunately, this forum is not the right place for it. Please be aware that you won’t get a response on the report, but it will be read.