[racket] Modules and File Save Bug?

I don't use modules very much, so this could be the defined behavior 
similar to how the ffi module "secretly" (it's actually documented) 
doesn't reload foreign libraries unless DrRacket is restarted, but I 
didn't notice anything in the documentation.  How to reproduce:

(module+ test
   (write "?"))

Without even running it, save the file, then delete that expression.  
Now run it (as in ctrl+r), and it will write "?".