Able to reproduce the issue on Windows 10 and mac 10.12.4 using chrome reported version #58.0.3029.81 and latest canary #60.0.3088.3.
On OS-Linux, the old password field, new password and password confirmation fields did not autofill with the saved password.

Bisect Information:
=====================
Good build: 51.0.2703.0    Revision(385938)
Bad Build : 51.0.2704.0    Revision(386251)

Change Log URL: 
https://chromium.googlesource.com/chromium/src/+log/3943d65cbc744467a489b7013cd736025851ef24..6d958c3b506da818850411246e247b4e1849c2d2

From the above change log suspecting below change
Review url: https://codereview.chromium.org/1814193002

dvadym@ - Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thanks...!!

Can we get this fixed before M60 hits stable?Please feel free to update the label accordingly.

Change password forms are not supposed to be filled on load, they could be get filled by clicking on field. So it works as expected. So it's not release blocker (so I'm removing labels).

Yeah, processing of autocomplete attributes for generation is broken, but it's not because of recent changes. We should fix this.

Technical explanations what's broken:

Processing of autocomplete attributes for password generation was implemented before implementatation of change password forms, so there is an assumption in code that only sign-up forms are supported:

1.It's required that username is marked with autocomplete attribute
https://cs.chromium.org/chromium/src/components/autofill/content/renderer/password_generation_agent.cc?type=cs&q=AutocompleteAttributesSetForGeneration&l=117

2.If there are autocomplete attributes, the first password element is taken as the candidate for generation
https://cs.chromium.org/chromium/src/components/autofill/content/renderer/password_generation_agent.cc?type=cs&l=426

So we need to loose the requirement on marking of username element and to implement correct choosing of input element for generation. 

Please don't publicize my e-mail :(

I can send you URL and user data privately since I don't want it to be public. Where can I send it to?

Sorry, I didn't know it's hidden. Repeating comment #7, I was asking whether the form from the issue description is available online.

I will ping you privately, if you prefer.

I've sent the data.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6121d9064193b5d9eef9092425909b4e6cec3bcb

commit 6121d9064193b5d9eef9092425909b4e6cec3bcb
Author: pkalinnikov <pkalinnikov@chromium.org>
Date: Fri Jun 09 12:00:52 2017

[PasswordGeneration] Improve change/confirm password field detection.

Use autocomplete attributes to discover change/confirm password fields when no
PasswordFormGenerationData is found for a possible password form.

BUG= 716464 

Review-Url: https://codereview.chromium.org/2917933002
Cr-Commit-Position: refs/heads/master@{#478250}

[modify] https://crrev.com/6121d9064193b5d9eef9092425909b4e6cec3bcb/chrome/renderer/autofill/password_generation_agent_browsertest.cc
[modify] https://crrev.com/6121d9064193b5d9eef9092425909b4e6cec3bcb/components/autofill/content/renderer/password_form_conversion_utils.cc
[modify] https://crrev.com/6121d9064193b5d9eef9092425909b4e6cec3bcb/components/autofill/content/renderer/password_form_conversion_utils.h
[modify] https://crrev.com/6121d9064193b5d9eef9092425909b4e6cec3bcb/components/autofill/content/renderer/password_generation_agent.cc

#10: I checked this patch on the site you've sent me, seems working. Can you confirm that this works as you expected?

I can confirm it's fixed.