In:
https://cs.chromium.org/chromium/src/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.js?rcl=c54fcea42957f1effa94fedcb2d985f11488888c&l=147

There's a mismatch between the origin in the reply and the origin in the login pair.

reply.loginPair.urls.origin = 'localhost'
loginPair.urls.origin = 'localhost/'

Not sure where the '/' is coming from, but the mismatch means we don't match the password to the item we're showing.

 Issue 715894  has been merged into this issue.

Thank you Hector for already looking into this. I am pretty sure about the root cause and will send out a CL shortly. Sorry that this slipped during the development of r466661 :/

Fix is in http://crrev.com/2844963003.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/11b44dd3ae59e1116acc9358a1807ccdf29a1359

commit 11b44dd3ae59e1116acc9358a1807ccdf29a1359
Author: dbeam <dbeam@chromium.org>
Date: Fri Apr 28 23:08:46 2017

MD Settings: mergeable "View password" button fix

R=hcarmona@chromium.org
BUG= 715866 

Review-Url: https://codereview.chromium.org/2848983002
Cr-Commit-Position: refs/heads/master@{#468171}

[modify] https://crrev.com/11b44dd3ae59e1116acc9358a1807ccdf29a1359/chrome/browser/extensions/api/passwords_private/passwords_private_event_router.cc

Your change meets the bar and is auto-approved for M59. Please go ahead and merge the CL to branch 3071 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), gkihumba@(ChromeOS), Abdul Syed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6b0d321f91799deaee17f021aac62967c4249d03

commit 6b0d321f91799deaee17f021aac62967c4249d03
Author: Dan Beam <dbeam@chromium.org>
Date: Mon May 01 19:01:55 2017

MD Settings: mergeable "View password" button fix

R=hcarmona@chromium.org
BUG= 715866 

Review-Url: https://codereview.chromium.org/2848983002
Cr-Commit-Position: refs/heads/master@{#468171}
(cherry picked from commit 11b44dd3ae59e1116acc9358a1807ccdf29a1359)

Review-Url: https://codereview.chromium.org/2853063003 .
Cr-Commit-Position: refs/branch-heads/3071@{#332}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}

[modify] https://crrev.com/6b0d321f91799deaee17f021aac62967c4249d03/chrome/browser/extensions/api/passwords_private/passwords_private_event_router.cc

 Issue 716485  has been merged into this issue.

Verified this issue on Mac OS 10.12.4, Windows-10 and Ubuntu 14.04 using chrome latest beta M59-59.0.3071.36 by following steps mentioned in the original comment. Observed able to view the password by clicking on show password button under chrome://md-settings. Hence adding TE-Verified label.

Thanks! 

Deleted: Screen Shot 2017-05-03 at 1.09.41 PM.png 192 KB

	Screen Shot 2017-05-03 at 1.09.41 PM.png 192 KB View Download

Thanks! I've updated to Canary 60.0.3088.0 and see the fix is also in there as well. I've let the users know on the Chrome forum that they should keep an eye out for the latest patch for Beta to see the fix. 

Deleted: Screen Shot 2017-05-03 at 7.54.20 AM.png 23.7 KB

	Screen Shot 2017-05-03 at 7.54.20 AM.png 23.7 KB View Download

 Issue 718209  has been merged into this issue.

Verified on ChromeOS  9460.30.0, 59.0.3071.41