ABP extension error message "Event pages are not currently supported"

[DavidSpector]

I am getting an error message from ABP on Firefox in the Extensions Debugger page (about:debugging#addons):

Reading manifest: Error processing background.persistent: Event pages are not currently supported. This will run as a persistent background page.
Reading manifest: Error processing storage: An unexpected property was found in the WebExtension manifest.

I do see a manifest entry " "background": {

"persistent": true, ". Perhaps it is not needed or is in the wrong place?

Note: another user reports "I get no such warnings using the last dev build - Version number 3.4.2.2206".

Source: ABP Forum, 12/13/18

Windows 10 Home, Firefox 63.0.3 and 64.0.0, ABP 3.4.2

[DavidSpector]

Screenshot

[mapx]

Could be a duplicate of https://issues.adblockplus.org/ticket/5398
(which is reported on android ..)

[mapx]

I re-checked and I get the same warnings:

Adblock Plus development build

Reading manifest: Error processing background.persistent: Event pages are not currently supported. This will run as a persistent background page.
Reading manifest: Error processing storage: An unexpected property was found in the WebExtension manifest.

Extension ID

​devbuild@adblockplus.org

Internal UUID

c0ff5c7c-3e00-4217-83c5-8a29a309c1d6Manifest URL

I checked with uBo too: no warnings

[greiner]

I can reproduce the warning message but on first glance the build looks ok. For comparison, here's the manifest.json diff between the release and development build:

@@ -1,8 +1,9 @@
 {
   "applications": {
     "gecko": {
-      "id": "{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}", 
-      "strict_min_version": "51.0"
+      "id": "devbuild@adblockplus.org", 
+      "strict_min_version": "51.0", 
+      "update_url": "https://downloads.adblockplus.org/devbuilds/adblockplusfirefox/updates.json"
     }
   }, 
   "author": "eyeo GmbH", 
@@ -70,7 +71,7 @@
   "manifest_version": 2, 
   "minimum_chrome_version": "49.0", 
   "minimum_opera_version": "36.0", 
-  "name": "__MSG_name__", 
+  "name": "__MSG_name_devbuild__", 
   "options_ui": {
     "open_in_tab": true, 
     "page": "options.html"
@@ -90,5 +91,5 @@
   "storage": {
     "managed_schema": "managed-storage-schema.json"
   }, 
-  "version": "3.4.2"
+  "version": "3.4.2.2206"
 }

Edit: Nevermind. I was under the impression that it's not shown for the release build but it turns out it is.

[greiner]

I can reproduce this in the following environments:

Ubuntu 18.10
Firefox 64 and 65
Adblock Plus 3.0, 3.4.2 and 3.4.2.2206

Therefore this warning may have been introduced in one of the recent Firefox versions.

Edit: I'm also seeing it on Firefox 60.4 ESR so maybe it has always been there. I also tried it in 54 before they changed the about:debugging UI but that one and especially 51 appear to have trouble working on my OS.

[sebastian]

Sorry, but we switched to GitLab. If this issue is still relevant, please file it again in the ​new issue tracker.