If needed, profile: https://drive.google.com/a/chromium.org/file/d/0B3KuDeqD-lVJcXl6RWw2dFotSDQ/view?usp=sharing, ping me to obtain access. Not going to share publicly as contains personal stuff.

Since you did a browser restart, you're on OSX, and only passwords seem to be broken, this might be a Mac Keychain issue, +vasilii . The solution might be to delete your passwords file and restart Chrome again. See https://bugs.chromium.org/p/chromium/issues/detail?id=722607#c23

To get a feel for sync's health, can you take a screenshot or dump of chrome://sync-internals and we can take a look, my guess is that it'll show that the passwords sync service failed to initialize.

If sync was enabled and healthy before you restarted Chrome, sync should still contain all your passwords. A custom passphrase stops passwords.google.com from understanding/returning your passwords, but within Chrome the decryption should continue to work just fine. Once the keychain issue is fixed sync will send all your saved passwords data to the passwords logic and things should return to normal.

Was it an update from beta 59 to beta 59?
Can you open the Keychain Access app and check the modification date of the Chrome Safe storage key?

#2 sounds plausible. I don't have my personal laptop right now. However I realized that If I open my personal profile on my corp laptop (which runs canary) I see the passwords in chrome://settings.
On the good side, it seems my passwords are there.

I will confirm tonight when I get home.
In any case, shouldn't we give a stronger signal to users and maybe point to instructions on how to solve keychain issues?

+kerrnel@

Removing RB as passwords haven't been lost.

Re #3: was an update from beta (don't know the previous version) to beta 59

Do you know what version was installed before 59.0.3071.47? And indeed, can you please check the Keychain Access app and report the modification date of the Chrome Safe storage key?

> Do you know what version was installed before 59.0.3071.47?
No idea. To add excitement I was traveling for a week, so my laptop has been off for a week at least.
Is there a way to tell my update history?

If you ls /Applications/Google\ Chrome.app/Contents/Versions/ folder (or in your case the beta version), the two versions present should be the current version and the N-1 version.

The modification date on the Chrome Safe Storage keychain entry might indicate more than the past version.

This might have been related to a bug that causes reads of local password data to fail:  crbug.com/728037 

Looks like there's been some development on  issue 728037 , and it isn't widespread as we initially thought. Reading https://bugs.chromium.org/p/chromium/issues/detail?id=728037#c14 it seems that, regardless of which state you're in, the solution to both is to delete your passwords file, and then restart Chrome.

OP, did you have a chance to check the files #10 asked for? Were you able to get back into a good state? Do we need to leave this bug open?

Sorry I forgot to followup here. It started working again at some point.

sync-internals dump is here: https://drive.google.com/file/d/0B3KuDeqD-lVJaHFYQUtVcjBZWGc/view?usp=sharing

Closing as things are working, feel free to re-open if things break like this again.