intellij 14 does not show all open files

In Intellij 13 the main code window showed all my open classes (their names flowed onto multiple lines), but now in Intellij 14 it shows a little dropdown and only shows them on one line. Is there a setting I can change to get it to flow to multiple lines again?

How do I open multiple files in IntelliJ?

2) To open multiple files at once -- just select them there (Ctrl+Click works fine here on Windows) and hit Enter.

How do I view tabs and spaces in IntelliJ?

You can use Find Action with ⌘⇧A (macOS), or Ctrl+Shift+A (Windows/Linux), and then type in 'Show virtual space at the bottom of the file'.

In Preferences, under Editor > General > Editor Tabs, untick the "Show tabs in single row" option.

IntelliJ IDEA 15

File > Settings... or press Ctrl + Alt + S
Editor > General > Editor Tabs > Show tabs in single row

If your work with a small number of file types, I recommend you to check the Hide file extension in editor tabs, too. I usually work with Java and XML files and I can easily recognize them because only the Java file names are in camel case.