After several plugins got updated yesterday I saw in the source code that actually no plugin is loaded* on the frontpage anymore. On all the other pages everything works just fine.
The most obvious one is the menubar (wp-menubar-plugin), and for now I made an exception for the homepage** loading a hard coded copy of the menu as I couldn't debug the issue.
I tried some debugging by deactivating all plugins and activating one after the other with no change. I had a look through all my template files and couldn't find anything that could cause this 'exception'.
Has anyone experience with this or a similar behaviour?
I would be thankful for any hint where I could start with the debugging.
Thank you for any help,
* the easiest test is the 'All in One SEO Pack' which should be found in the header
if (is_page('home')) ... echo css and in the body echo html