Buffering spinner misaligned on IE

[TheModMaker]

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

What version of Shaka Player are you using?
v2.5.4

Can you reproduce the issue with our latest release version?
Yes

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

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

If custom app, can you reproduce the issue using our demo app?

What browser and OS are you using?
IE11

For embedded devices (smart TVs, etc.), what model and firmware version are you using?

What are the manifest and license server URIs?
Any asset.

What did you do?

1. Force buffering state:

shakaDemoMain.controls_.getLocalPlayer().isBuffering = function() { return true; }
shakaDemoMain.player_.dispatchEvent(
    new shaka.util.FakeEvent('buffering', {buffering: true}));

What did you expect to happen?
Buffering spinner should appear over play/pause button.

What actually happened?
Spinner was on the right side of the page.

[joeyparrish]

We've broken and fixed this so many times, it's crazy. Is it definitely still broken on both the latest release and nightly? Can you double-check on older v2.5.x releases to see if we had it right at any point in this branch?

[TheModMaker]

It was working in v2.5.0 and v2.5.1, but broken in v2.5.2-v2.5.4 and on the nightly.

[joeyparrish]

I haven't looked at the commit log yet, but... I'll bet you a tasty drink of your choice we'll find out I'm the one who broke it. :-)