Hi Batish. I have the SMP ticket you opened about this issue. I've updated the information there for your reference.
For everyone else, I have reproduced this exact issue on iOS 8 using SP4 HF12 and SP5 HF6. I tested with iOS 7 as well but that does in fact prohibit you from seeing the contents of the payload as you could on iOS 8. It was also suggested by another colleague of mine that the Auto Join option could conflict with the SSID = Hidden settings, but I did not see the test results to prove that.
I will have to wait until next week to finish testing. I will be attempting to reproduce this using the Apple Configurator as you did but I won't have access to the Mac in our office until then. As of now, based on both of our results this is an iOS issue. Hopefully we can say for certain after my next tests.
Cheers,
Greg
