The "Friends Screen" key bind doesn't work when set to a mouse button

The bug:

The "Friends Screen" key bind doesn't work when set to a mouse button.

Steps to reproduce:

1.Bind the “Friends Screen“ key to a mouse button like Button 5.

2.Try to use the button you bind to open the friends screen.

Expected result:

The friends screen will be opened.

Actual result:

Nothing will happen.