Hide test window

Hi, I'm using phpstorm 2017.1.

I develop using TDD and I run tests continuously (using the key combination shift+F10), with this action at the bottom appear the tool window with the test results.

It is fixed, undocked and when appear it doesn't have the focus.

I tried to use the ESC key or continuing to write code in the editor window but the tool window doesn't disappear automatically.

The only solution is using the mouse to gain the focus on the tool window and re-click again on the editor window. With this action the tool window lost the focus and it close automatically.

Is it a bug or do I set something in the settings to allow the tool window to close automatically after I re-start to typing?