Menu bar not avalable

I installed Audacity 2.3.0 from Ubuntu software. After installation I couldn’t see the Menu Bar on the application. I am including the screen shot also. My OS is Ubuntu 16.04 (up to date). Please help me to solve it.

What about other applications? Do they have their menus at the top of the screen rather than the top of the application window?

In Gimp menu on top of the window. But now I found Audacity 2.2.2 also installed in my system, and in which Menu is properly showing, but in Audacity 2.3.0 still it is not available.

According to the Ubuntu website, the Ubuntu 16.0.4 repository version of Audacity is 2.1.2-1

The latest official release of Audacity for any version of Linux is Audacity 2.2.2

Audacity 2.3.0 is for Windows and Mac only.

Audacity 2.3.1 is scheduled for release in February, but it will be some time until it becomes available in the official repositories.