Having trouble HIDING titles in Panel pages?
Commonly needed when for example your Front Page is a Panel full of Views, and you really don't want Panel details cluttering up your display.
There are TWO ways to set up Panels. Only one of them allows you to hide titles.
1) Panel as a Content Type, and thus the Panel is created as a node.
You CANNOT hide the title. The Panel is a Node and Nodes must have titles. It's a Drupal feature.
(No doubt playing with template files and css will work, but that's the only way).
2) Panel created as a Panel Page in example.com/admin/structure/panels
Choose "no title". Done.
(It's not technically a node, though to all intents and non programming purposes it acts like one, it can threfore not have a title displayed).
Fixing existing (titled) Panels
You have to delete your existing Panel nodes and rebuild them as Panel pages.