UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36

Steps to reproduce the problem:
1. Open buggysubs.html (Will need to have file access enabled)
2. Wait for video to begin playing

What is the expected behavior?
The video should begin playing with only the English track enabled

What went wrong?
The English track and at least one other track are enabled, causing tracks to appear on top of one another

Did this work before? N/A 

Chrome version: 60.0.3112.90  Channel: stable
OS Version: 10.0
Flash Version: 

This may seem like an over-complicated way to set up subtitle tracks, but there's a reason for that

This is part of a project that involves taking certain third-party external files and transforming them into WebVTT files. The idea is that the "main" track is loaded first, then once that is ready, the video starts while the tracks for the other languages are prepared independently of the video and one another.

The transformation code is irrelevant to the bug, so it has been removed for this demonstration.

This does not happen in Firefox
 

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