Athena loot disappears from Sea Fort Raids upon completion? This must be a bug.

So I just tried doing some Sea Fort Raids for Athena (not the skele ones). I was noticing that other then the two skulls in the upstairs locked room, once finished the fort was going giving me regular fort loot. This happened multiple times. So I went over to another one and looked in the vault before progressing the Raid. The loot was Athenas. I continued the Fort and finished it. However, when I went downstairs and opened the treasury, all the Athena's loot was gone. It had transformed back into a regular Fort's loot. Keep in mind I had died once. Either when I died the loot transformed or when I finished the fort. Either way the only two Athena's items were the two items in the locked storage room every time. I tried five times. This seems to be quite the bug.