UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36

Steps to reproduce the problem:
1. Change window size.

What is the expected behavior?
1. Zoom changes to maintain desired character width, e.g. I almost always want ~165 characters width.

What went wrong?
1. Feature not extant.

WebStore page: https://chrome.google.com/webstore/detail/secure-shell/pnhechapfaindjhompbnflcldabbghjo

Did this work before? No 

Chrome version: 55.0.2883.95  Channel: stable
OS Version: OS X 10.11.6
Flash Version: Shockwave Flash 24.0 r0