Ulduar 10/25 combined not able to loot chests. Specifically Kologarn and Algalon.
Both chests pop up. But not golden gear icon. And yes. I /reloaded and also dismissed pet and Feigned Death to drop any possible aggro. Even jumped off the edge of Shattered Walkway and died.
Still chests unlootable. This may be a “known” issue but if so I do not see it in Google other then a old reddit post from 3 yrs ago and a few posts about hard mode loot issues since the Ulduar 10/25 combine.
Edit - And no the loot does not go to mail from the postmaster either.