I came across this strange bug. When I record from an Android device (Samsung Galaxy S3 with Android 4.x and Chrome) and try to playback it on my PC (Chrome, Firefox or IE11), there is no playback. It's as if there was no recording at all. I'm able to reproduce this on Moodle 2.8.6 with the Atto editor and also TinyMCE. Also, the problem never occurs with pictures or videos.
Did I miss something?