UserAgent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2730.0 Safari/537.36

Steps to reproduce the problem:
1. open canary
2. open gmail, compose new email
3. click paperclip attachment (then nothing)

What is the expected behavior?
a window should (and has before yesterday) pop up where I would select whatever document or file to attach to the email. I have over and over again tried different pop-up standards, but those did not change, and yet this particular issue started yesterday. 

What went wrong?
clicking on the paperclip to attach a document or file to the email used to bring up an additional window, does not any more. best I can tell this started yesterday, as attaching documents and files to emails is part of my daily SOP. 

Did this work before? Yes best I can tell this issue started Monday May 9, or Tuesday May 10, 2016

Chrome version: 52.0.2730.0  Channel: canary
OS Version: 6.3
Flash Version: Shockwave Flash 22.0 r0

sending emails with attached files is part of my daily SOP, and switching back and forth from Canary to Chrome Regular is not very time efficient, especially since I cannot just stay in Chrome Regular.