UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36

Steps to reproduce the problem:
1. Open the web page of Dropbox paper
2. Use "Zuyin" as the IM on macOS
3. Type Chinese on Dropbox paper

What is the expected behavior?
Type Chinese normally.

What went wrong?
The entire browser crashes.

Crashed report ID: 

How much crashed? Whole browser

Is it a problem with a plugin? N/A 

Did this work before? N/A 

Chrome version: 61.0.3163.100  Channel: n/a
OS Version: OS X 10.12.6
Flash Version: