All bug reports must contain a test case using one of our Codepen templates; Bug reports without one will be summarily closed:
v3Codepen template - http://codepen.io/rosskevin/pen/VvRgrNv4Codepen template - http://codepen.io/rosskevin/pen/eJMMVB
(Codepen URL here)
A summary of the issue and the browser/OS environment in which it occurs. If suitable, include the steps required to reproduce the bug.
Description of expectation, mockup, etc.
Any other information you want to share that is relevant to the issue being reported. This might include the lines of code that you have identified as causing the bug, and potential solutions (and your opinions on their merits).