The only difference I can see between the example I provide here is that the Contact component (here AiContactsafe) have is componentheading inside is aicontactsafe DIV
Alpha have is component heading outside the alphacontent DIV maybe this is the problem. It will have to be related to Joomla itself (1.5.23) in my case, or not the Alpha default.php template file as they are mostly identical in the alpha .16 version.
I think the apparition of the componentheading, patway alphabar should be conditionnal to the apparition of the alphacontent div, no alphacontent div no componentheading etc....