* Description*

The cursor is missing or misplaced in an input box with an focusin handler attached when returning false from the handler.

Affected is Firefox (I'm using 46.1).

See emberjs/ember.js#13112

** Link to test case **

Courtesy of @Serabe (emberjs/ember.js#13112 (comment)):

http://codepen.io/Serabe/pen/PNVXdd?editors=0010

This codepen uses jQuery 2.2.2 but it also breaks with 2.2.3. It works alright with jQuery 2.1.4