Unable to open legendary chestsueen

Game mode: [Online
Problem: [Bug]
Region: [America]

Let me start by making it clear that I am lv 60 and I do in fact have keys in my inventory. I collected two chests after beating a couple bosses and when I got to the third chest it wouldn’t open. This is the chest near the white tiger. So I decided to head over to the reaper queen boss north of the black galleon. The chest there wouldn’t open for me either. What’s going on here?

Steps on how to reproduce issue:

  1. beat a boss
  2. get some keys
  3. open a few chests
  4. wait till you can no longer open chests?