I realise that this may have been posted elsewhere, but I'm new to the forums, so be patient.
I recently levelled up to Level 17 (Yay!), but unusually, when I did so, I received absolutely no cash, and no level up screen telling me what I had unlocked. (The stuff is actually unlocked by the way.)
This is not me whining about not getting cash (although getting it would be pretty neat) but just reporting it.
I realise having no evidence probably doesn't help, buuuuut, as I said no screen appeared at all.