It seems that there's an "auto preview" set in this new release (2015.03, Linux Mint x64). Whenever a document, say a.scad, is saved, It issues an auto-preview OF ALL OPEN DOCs linked to a.scad.
This results in many unwanted previews and is extremely annoying, especially when one of those linked to a.scad takes a long time to run.
Prior to this version, I've used up to 2015.02.01 nightly but didn't see this behavior. It seems that it's added between 02.01 and 03.15. Can this at least be set in the preference so users can shut it off ?