Does this work if you aren't using local/roaming profile sync? Fiddling with settings for uBlock Origin, I see that toggling the 'Allow in incognito' checkbox on chrome://extensions triggers a change in sync data, but changing things from chrome-extension://cjpalhdlnbpafiamejdnhcphjbkeiagm/dashboard.html does not seem to affect sync data.

You can view sync data at chrome://sync-internals . If you go to the 'Sync Node Browser' tab you can inspect what the data looks like. I'm not sure exactly what a well behaving extension looks like and how it can/should sync data, but if the change isn't making it to chrome://sync-internals, it's not going to get synced across your device.

+pastarmovj in case this turns out to be a roaming profile issue, which it doesn't seem like.
+rdevlin.cronin to weigh in on how extensions are supposed to (can they even) sync custom settings.

Extensions can choose to use chrome sync by using the chrome.storage.sync API; data stored in there should sync across devices (just as the extension installation does).  If the extension is not using chrome.storage.sync (and instead is using LocalStorage, server side storage, chrome.storage.local, or any other storage solution), chrome will not sync the data.

Sky, I guess the comparison here is to the full profile (if it is roamed between machines) in which case obviously the extension internal state is fully preserved. I think Lastpass does not use sync storage for its master password as I have been using the extension as well and it does ask for its password on every machine. This is indeed something that roaming profiles can not help with at this stage.

I think this bug should be seen as a feature request for roaming profiles to support extensions local storage. This seems like something that needs to be done outside of the sync engine though as it doesn't fit in its philosophy. It goes close to another feature request for roaming profiles which is to cache extension crx files so that they get reinstalled faster when roaming to new machines.

If you agree with this analysis feel free to remove the sync component from this bug and assign to me instead.

I can confirm LastPass does not sync anything. I contacted them about this. Users would have to do all settings (including typing their entire long e-mail adddress and setting idle timeouts) every day.

uBlock Origin does sync some settings, but not the most important one to use cloud storage. Hence it does not restore the saved settings in the new profile.

We are currently using profiles on network drives which works fine except for  issue 674076 . We won't migrate to local-sync until extensions local storage will be made possible.

Thank you for your feedback +pastarmovj. I have no permission to change components but please go ahead and assign it to yourself.

Thanks for confirming this.

I will keep the sync component for now but as I said the actual implementation would most probably be unrelated to the sync client.

It's unclear to me who the owner of this should be. It seems almost as if this should be closed as WontFix, since the extension is not syncing its data, there is no "bug", right?

Re #7
Agreed.

Removing Sync component per the above comments. Leaving it open as a feature request for enterprise/roaming profile support.