Sand, Sand Everywhere! bug

[Brecken-kilrogg]

I posted the same issue here.

Dormant Alcove - Spatial Opener consumed by reopening sand pile

I was opening the sand piles, not realizing my inventory had become full. As a result, I was forced to open one of the piles twice to finish looting after clearing space. It consumed another opener so now I am one opener short to complete the piles and the Achievement.