UserAgent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36

Steps to reproduce the problem:
1. Load the attached testcase in a tab
2. Do 2 mousedrags over one of the buttons (press down left mousebutton and move at least 1 pixel before releasing)
3. Exactly at the second drag event, the tab crashes

What is the expected behavior?
It should not crash

What went wrong?
Tab is crashing with "Aw, Snap!"

Crashed report ID: 

How much crashed? Just one tab

Is it a problem with a plugin? No 

Did this work before? N/A 

Chrome version: 51.0.2704.106  Channel: stable
OS Version: 4.6.3-1-ARCH GNU/Linux
Flash Version: Shockwave Flash 11.9 r900

This is about the most minimal testcase I could make. To reproduce it requires 2 button-tags on the page, both requires another tag inside with ::before content set through css. The event must be triggered in a child of the html which is replaced. Note that it works fine if you don't move the mouse while clicking.

See attached html file, or here https://gist.github.com/flugsio/83ca2ac8e78ef70e4de44371150655e8
 

Deleted: chrome_mousedrag_crash_20161711.html 1.4 KB

chrome_mousedrag_crash_20161711.html 1.4 KB View Download