No chests in Desert Temple

Seed: Coastal Village (-1813740965); Survival Mode; Normal Difficulty; Infinite Size; world created after Beta v 1.5.0.

Desert Temple (coordinates 2602 70 -1905) contains no chests. The pressure plate is there, see attached screen shots. I have tried to delete the world and import a previous export to no avail. I have had issues in the past where Blacksmith shops had no chests, but this is the first time for a Desert Temple.