Chrome Version       : 59.0.3071.47
OS Version: 9460.34.0

What steps will reproduce the problem?
1. Go to gmail and open an email with an attachment
2. Click on the attachment download button
3. Wait for item to download

What is the expected result?
A notification should pop up showing that the download is in progress and giving me options for interacting with the file.


What happens instead of that?
The download notification just is hidden down in the notification center in the tray - it never pops up on the screen. This is a super poor experience for users because it looks like the download just failed.


Please provide any additional information below. Attach a screenshot if
possible.

UserAgentString: Mozilla/5.0 (X11; CrOS x86_64 9460.34.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.47 Safari/537.36