Buffering spinner is offset from play button

[joeyparrish]

Have you read the FAQ and checked for duplicate open issues?:
Yes

What version of Shaka Player are you using?:
master

Can you reproduce the issue with our latest release version?:
N/A

Can you reproduce the issue with the latest code from master?:
Yes

Are you using the demo app or your own custom app?:
Demo

What browser and OS are you using?:
Chrome on Linux

What are the manifest and license server URIs?:
N/A, any demo asset

What did you do?
Click "Load"

What did you expect to happen?
The buffering spinner is aligned with the play button

What actually happened?
The buffering spinner is offset and above the play button

This is easier to see and investigate if you use the debugger to enable the spinner without loading content.

[joeyparrish]

Correction: The position of the spinner is correct for some video aspect ratios, but not others. Sintel is a problem, but Angel One is not.

[joeyparrish]

The easiest repro is to select Sintel (possibly twice, because of #1696), load the content, pause the content, then open the debugger and uncheck the style "display: none" on class "shaka-buffering-spinner".