Follow the HIG guidelines on Tooltips
Hovering over each item in the header bar, I get the following tooltips:
- Go back
- Go forward
- Nothing for path bar locations
- Nothing for the path bar menu
- Search
- Show list
- View options
- Nothing for the primary menu
According to the HIG, the tooltips should be something like:
- Back
- Forward
- Home Folder (or equivalent for each location in the path bar)
- Current Folder Menu
- Search
- List View
- View Options
- Main Menu