Raid difficulty stuck on heroic - Bastion of Twilight

Entering Bastion of Twilight always defaults to heroic difficulty regardless of Normal being the raid difficulty set. This has happened on several of my characters for a couple weeks now trying to do transmog runs. Trying to switch it to heroic then back to normal doesn’t change anything and all bosses still drop heroic loot.

I have the exact same issue, also on Bastion of Twilight. No idea what is going on.

Still an issue…