Maintenance for the week of April 6:
• [COMPLETE] ESO Store and Account System for maintenance – April 8, 9:00AM EDT (13:00 UTC) - 6:00PM EDT (22:00 UTC)
This happens to me if I port or queue to a different zone while crouched-- I arrive in the new zone no longer crouching, but any container that I click on to loot shows the eye as though I'm crouching.
To get rid of it, open a container while not crouching, then crouch and uncrouch while the container is open.