Messaging Menu not showing in 13.04 (Beta 2)

view full story

http://askubuntu.com – I've written an indicator (in Python 3, PGobject, AppIndicator3) which hooks into the Ubuntu messaging menu. The indicator works on 12.04 (but I've not tested it on 12.10). Today I installed 13.04 Beta 2 under VirtualBox to test the indicator. I noticed that the messaging menu (the envelope icon) does not appear...regardless if my indicator is installed or not. I tried installing unity-mail to see if I got a different result and I did (it crashed) but same result for the messaging menu - no icon appearing. Possibilities are... This is some bug given 13.04 is still in beta, or Something (HowTos)