WebExtensions with cookies disabled

[Floyd77]

Hi everyone, I have third-party all cookies disabled and I manage my cookies manually with Cookie Monster extension (I allow them per-site).

I did not have any problem with this config until I tried to use the new Pushbullet extension, which was updated to WebExtension in the last version published yesterday. Until now, I only had to add an exception like it is explained in this comment: https://addons.mozilla.org/es/thunderbi ... ws/634332/

But with the new version it doesn't work anymore. I've tried adding an exception for the moz-extension://... URL as this user did: https://www.reddit.com/r/PushBullet/com ... n/d961fk9/

But it does not work neither. It seems Firefox disables all cookies for localStorage for WebExtensions when you disable third-party cookies, if I enable them it works well. I tried with a test site which uses localStorage (see this comment): http://www.ghacks.net/2016/10/24/the-pu ... nt-4009754

And it works good if I allow cookies for that particular site (with cookie monster and third-party cookies disabled as always) but I have no luck with WebExtensions. I will not enable third-party all cookies to use this extension so I'd like to know if I'm doing something wrong or if there's a bug.

Thanks!

EDIT: The problem happens with all cookies disabled and allowing them per-site, so I'd like to know how to allow cookies for a WebExtension.
EDIT 2: It works now, at least since Firefox 55.

[Brummelchen]

if it is a bug write to the author, we can nothing do for you here.
if you dont want to deal with 3rd-party cookies you have to deal with the problems.

#to add - most extensions are only tested with a clean profile and regular settings, some with other extension which serve same features to investigate into interferences.

good luck.

[Floyd77]

I mean a Firefox bug, it happens the same thing with any other WebExtension using localStorage, like X-Notifier for example. The problem is Firefox is blocking all cookies for WebExtensions when you only want to block third-party ones using that preference from the options.

Or it could be I'm not allowing the use of cookies in the right place, that's why I ask. I'm looking for someone who knows well how WebExtensions do work with cookies/localStorage.

[Brummelchen]

you mean this one?

It seems Firefox disables all cookies for localStorage for WebExtensions when you disable third-party cookies,

not sure but are webextension ready to go now that early?

from my experience webextensions are comparable with chrome extensions, so i think its not independant from each other, maybe:
https://bugzilla.mozilla.org/show_bug.cgi?id=1191418

or those WE load something in background which need 3rd-party cookies, example
https://bugzilla.mozilla.org/show_bug.cgi?id=1254856

i dont have those disabled but i control them either in blocking or deleting. thats the second part of my first anser.

i hope some insider from webextensions will speak up.

[Floyd77]

I updated the OP: The problem happens with all cookies disabled and allowing them per-site so I'd like to know how to allow cookies for a particular WebExtension.

adding an exception for the moz-extension://... URL does not work. It worked with the older XUL extension but not with this version.

[Floyd77]

adding an exception for the moz-extension://... URL does not work. It worked with the older XUL extension but not with this version.

Update: this workaround now works since Firefox 55 beta (I just discovered it).