If I dragged the tab view controller to the OS X application storyboard, the tab view buttons seem to be mistaken. Can you help me understand what is happening?
Here is a minimal example of a new project in which I simply replaced the empty View Controller pool with a new table view controller:

The highlighted tab displays by default as No Shadow Tab View, which means the tab style Tablessin the Attributes Inspector.
The Scene list also has two View tabs.
If I build and run, the result will look like this:

, . , , .
" " Top Tabs Tabless, , :

Tabless With Bezel, , , :

. ( "", )? , .
Interface Builder Tab View Controller?