Depends block can't access module property

I found some strange behavior in Depends block.

Running attached example we can see that qbs runs through  Depends block twice. The first time it can not resolve qbs.targetOS property (it's undefined), but product.qbs.targetOS or  project.qbs.targetOS resolves fine. On second pass qbs.targetOS also works.

On older qbs version (1.45) qbs.targetOS works in both cases.

Is that a bug, or i missing something?