Difference between SWQL Studio and SWQL in EOC

The new EOC makes heavy use of SWQL to report on multiple Orion instances at once, but I've stumbled over what appears to be a major difference (of which I'm sure the issue is on the EOC side and have posted in their forum:

Using just a simple SWQL query, even against a single Orion from the EOC, it appears that there is an error where two values with the same column name cannot be selected, even if they are renamed:

select NodeID, v.Node.Caption, VolumeID, v.Caption, VolumeType, VolumeSize   
from Orion.Volumes v 

Any thoughts on what could cause this difference in behavior?