Able to reproduce the issue on Ubuntu 14.04 using 58.0.3007.0.

Note: Looks like Not applicable to Mac.

Bisect Info:
===========
Good build :  58.0.3006.0,  Revision Range- 448862
Bad build  :  58.0.3007.0,  Revision Range- 449173 

After executing the per-revision-bisect script, i got the following CL's between good and bad build versions
============================================
https://chromium.googlesource.com/chromium/src/+log/1d4fa2ca68d3a08501dfe9131770f4e5dd622bf5..4ef351aa3467a587e03d8d19cdd9f280ab8fff4d

The suspecting Change Log is :
-----------
https://chromium.googlesource.com/chromium/src/+/4ef351aa3467a587e03d8d19cdd9f280ab8fff4d


Review-Url: https://codereview.chromium.org/2680393002

oshima@- Could you please look into this issue, if it's related to your change?  if not could you please help us to reassign this issue to the right owner.


Thank You...

We decided to revert this behavior, which was introduced in 56, because there are people who are using <1.0 font scale without knowing it, and they expect the font to match the UI scales.

I can put it behind a command line flag if there is a strong support for it though. I'll leave it available so that people can find this for now.

Note that this also breaks things going the other way. I have a HiDPI screen and have my system scaling set to 1.5x. With Chrome 56 (and I presume due to this change), Chrome menus, and tab fonts are "squished" together incorrectly, presumably due to a scaling issue.

Deleted: scaling.png 39.7 KB

	scaling.png 39.7 KB View Download

(Previous discussions.)

https://bugs.chromium.org/p/chromium/issues/detail?id=629933
https://bugs.chromium.org/p/chromium/issues/detail?id=646254
https://bugs.chromium.org/p/chromium/issues/detail?id=687770

oshima@ since this marked as releaseBlock-Stable, could you please provide an latest update on this issue.

Thank You...

Issue is still seen on Ubuntu 14.04 with latest canary(58.0.3026.0) 

oshima@: Could you please take a look at this and provide the latest update.

We decided not t support < 1 scale for now as there are more people who do not want this than who wants.

I'm just leaving this opened to correct feedback to see if we should revisit later.

Any thoughts on my comment (https://bugs.chromium.org/p/chromium/issues/detail?id=690346#c4)? I'm seeing this going the other way, with a scale > 1 due to HiDPI. Chromium is bungling the UI fonts pretty badly; it looks terrible.

Ok, can you file a separate bug and assign it to me?

I opened  issue 698075  but it does not possible for me to assign issues.

oshima@ - Friendly Ping...!!

Could you please provide any update on this issue as per comment #3.

Thanks...!!

This isn't regression. We made change to allow lower (<1.0) scale for fonts, but it's been reverted after user feedback/reports. 

Closing as there is no strong demand.