UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/48.0.2564.116 Chrome/48.0.2564.116 Safari/537.36

Example URL:
https://vine.co/MaxNoSleeves

Steps to reproduce the problem:
1. Open a vine user page like https://vine.co/MaxNoSleeves

What is the expected behavior?
Page loads normally

What went wrong?
Spinning forever, page becomes unresponsive then "A plugin (Shockwave Flash) is not responding"

Did this work before? N/A 

Is it a problem with Flash or HTML5? Flash

Does this work in other browsers? Yes 

Chrome version: 48.0.2564.116  Channel: n/a
OS Version: Ubuntu 15.10
Flash Version: Shockwave Flash 11.2 r999

It happens to any vine user page vine.co/username, all extensions disabled

Disabling Flash, page no longer becomes unresponsive but videos don't play without flash

Adobe Flash Player - Version: 11.2.999.999
Shockwave Flash 11.2 r999
Name:	Shockwave Flash
Description:	Shockwave Flash 11.2 r999
Version:	11.2.999.999
Location:	/usr/lib/adobe-flashplugin/libpepflashplayer.so
Type:	PPAPI (out-of-process)
 	Disable
MIME types:	
MIME type	Description	File extensions
application/x-shockwave-flash	Shockwave Flash	
.swf
application/futuresplash	FutureSplash Player	
.spl

No such issue with Firefox 45