Preload your images so they don't disappear when I hover them the first time
Several of the icons throughout the site (the help and ideas icons at least) don't load until you mouse over them for the first time. If you don't have those assets cached, they disappear until loaded.
Our site employs caching and sites behind CloudFlare. This should be resolved now.
We've also got some changes on the way that will improve the help system and make it more visible.
Thanks for the feedback!