I just installed a fresh Multisite install and added P2. Without any plugins enabled, if I enter some text on the home page and click "Post it" I get a navigation warning. The one that basically says "if you leave this page you'll loose the information you input" like when you have an unsaved post in the normal post editor. Why would it do this?
It also gives the same warning when switching between post formats (Status Update, Blog Post, Quote, Link) if there's any info entered in the fields. Any ideas on why the heck this would happen? Surely it's not supposed to do this on post? I never did in the past.