Opened on 05/26/2017 at 08:09:33 AM

Closed on 05/29/2017 at 12:56:33 PM

Last modified on 06/07/2017 at 01:38:21 PM

#5279 closed defect (fixed)

Adblock Plus 2.9 broken in Thunderbird

Reported by: tibitts Assignee: trev
Priority: P1 Milestone: Adblock-Plus-2.9.1-for-Firefox
Module: Adblock-Plus-for-Firefox Keywords:
Cc: greiner, trev Blocked By:
Blocking: Platform: Thunderbird
Ready: yes Confidential: no
Tester: Unknown Verified working: yes
Review URL(s):



Linux OpenSUSE 13.2 32-bit, Thunderbird 52.1.1, ABP 2.9
filter lists: Easy Privacy + Easy List, Easy List Germany, Facebook Privacy List, Fanboys Social Blocking List, Malware Domains, Adblock Warming Removal List, Prebake - Filter Obtrusive Cookie Notices

How to reproduce

Reading articles from a RSS news feed, doesn't matter which one, as long as there are ads

Observed behaviour

Suddenly ads did appear in the articles. Upon checking the filter list subscriptions - they were all gone.
Even though the filter subscriptions can be re-created, they will be lost again after Thunderbird is restarted.
Reverting to ABP 2.8.2 restores the filter subscriptions.

Expected behaviour

Filter subscriptions should not be lost.
Is this already the point were Thunderbird doesn't cope any more with the changes in preparation for web extensions?
If that's the case, ABP 2.9 shouldn't be marked as compatible with Thunderbird any longer.

Attachments (0)

Change History (12)

comment:1 Changed on 05/26/2017 at 08:11:14 AM by tibitts

Platform should be Thunderbird, not Firefox.

comment:2 Changed on 05/26/2017 at 09:52:38 AM by mapx

  • Platform changed from Firefox to Thunderbird

comment:3 Changed on 05/26/2017 at 03:56:52 PM by hansenjo

I have the same problem on macOS 10.12.5 with Thunderbird 52.1.1 and ABP 2.9. ABP loses all the filter lists on restart. It doesn't matter which lists, even custom rules are affected. One can re-add them, but they aren't presistent between restarts. Reverting to ABP 2.8.2 fixes it. I've disabled automatic updates of my Thunderbird add-ons for now ...

comment:4 Changed on 05/26/2017 at 09:47:16 PM by mapx

  • Cc greiner trev added

comment:5 Changed on 05/28/2017 at 05:53:33 PM by trev

  • Component changed from Unknown to Adblock-Plus-for-Firefox
  • Priority changed from Unknown to P1
  • Ready set

There is no actual data loss here, but Adblock Plus I/O is completely dysfunctional. This is because the communication with the embedded WebExtension doesn't work. From some quick debugging, the issue doesn't seem to be that the WebExtension didn't start up. However, the WebExtension didn't establish a connection to the main extension for some reason, and all communication ends up waiting for that connection.

comment:6 Changed on 05/28/2017 at 07:08:11 PM by trev

From the look of it, the embedded WebExtension started up "correctly" - the issue rather seems to be that WebExtensions are generally broken on Thunderbird and the code in the background page didn't even run.

comment:7 Changed on 05/29/2017 at 08:57:53 AM by trev

And I finally got to the root of the issue - while all the code is theoretically in place, Thunderbirds left the webextension-scripts category empty so that none of the WebExtensions APIs started up. Theoretically, the embedded WebExtension loaded. Practically, it has no APIs to use, in particular not the backgroundPage API. It's the same with SeaMonkey but you'd have to install a pre-release version to hit this issue - the current release is outdated and incompatible with Adblock Plus 2.9.

comment:8 Changed on 05/29/2017 at 11:54:49 AM by trev

  • Owner set to trev

comment:9 Changed on 05/29/2017 at 11:55:23 AM by trev

  • Review URL(s) modified (diff)
  • Status changed from new to reviewing

comment:10 Changed on 05/29/2017 at 12:55:42 PM by abpbot

A commit referencing this issue has landed:
Issue 5279 - Fix broken I/O in non-Firefox applications

comment:11 Changed on 05/29/2017 at 12:56:33 PM by trev

  • Milestone set to Adblock-Plus-for-Firefox-next
  • Resolution set to fixed
  • Status changed from reviewing to closed

comment:12 Changed on 06/07/2017 at 01:08:32 PM by Ross

  • Verified working set

Fixed. ABP works as expected in Thunderbird and keeps settings after restarts.

Thunderbird 52.1.1 / Windows 7
Seamonkey 2.48 / Windows 7

Last edited on 06/07/2017 at 01:38:21 PM by Ross

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