Bug#1112227: libwebkit2gtk-4.0-37: Gnome Online Accounts not working, shows error "Webkit encountered an internal error"

[Sylvain Beucler]

Hi,

On 10/31/25 13:48, Emilio Pozuelo Monfort wrote:
> On 31/10/2025 13:16, Adrian Bunk wrote:
>> On Fri, Oct 31, 2025 at 11:05:46AM +0100, Emilio Pozuelo Monfort wrote:
>>> On 02/09/2025 11:51, Adrian Bunk wrote:
>>>> On Fri, Aug 29, 2025 at 01:30:05AM +0300, Konstantin Pokotilenko wrote:
>>>>> В Чт, 28/08/2025 в 12:59 +0300, Adrian Bunk пишет:
>>>>>> On Wed, Aug 27, 2025 at 10:08:05PM +0300, Konstantin Pokotilenko
>>>>>> wrote:
>>>>>>> В Ср, 27/08/2025 в 20:30 +0300, Adrian Bunk пишет:
>>>>>>> ...
>>>>>>>> Two additional questions:
>>>>>>>> 1. Do you have an HTTP proxy configured?
>>>>>>>> 2. If yes, using PAC (proxy auto-config)?
>>>>>>>>
>>>>>>>> I am asking since my guess is that the new WebKitGTK broke
>>>>>>>> libproxy1-plugin-webkit, which is used for parsing PAC files.
>>>>>>>
>>>>>>> Thanks for quick response.
>>>>>>>
>>>>>>> No HTTP proxy used.
>>>>>>>
>>>>>>> I found out a simpler reproduction, it is to just run WebKit
>>>>>>> example
>>>>>>> browser: /usr/lib/x86_64-linux-gnu/webkit2gtk-4.0/MiniBrowser
>>>>>>> ...
>>>>>>
>>>>>> That was helpful.
>>>>>>
>>>>>> Please check if you have libproxy1-plugin-networkmanager
>>>>>> installed, and whether removing it fixes the issue.
>>>>>
>>>>> It was installed. Removing it fixes the issue.
>>>>
>>>> Emilio, I can reproduce this in bookworm by compiling webkit2gtk with
>>>> libc++-16 there.
>>>
>>> Were you able to reproduce this on bullseye?
>>
>> Yes:
>>
>> $ /usr/lib/x86_64-linux-gnu/webkit2gtk-4.0/MiniBrowser
>> WebKitNetworkProcess: /build/libproxy-cqqv9A/libproxy-0.4.17/ 
>> libmodman/module_manager.hpp:58: std::vector<T*> 
>> libmodman::module_manager::get_extensions() const [with T = 
>> libproxy::network_extension]: Assertion `obj != NULL' failed.
>> ERROR: WebKit encountered an internal error. This is a WebKit bug.
>> ../Source/WebKit/WebProcess/Network/WebLoaderStrategy.cpp(577) : 
>> internallyFailedLoadTimerFired
>>
>>> I am trying to, by installing
>>> libproxy1-plugin-networkmanager, setting a proxy in NM (via PAC file 
>>> or URL),
>>
>> No proxy setting required.
>>
>>> but I can't get MiniBrowser to crash.
>>
>> MiniBrowser itself does not crash.
>>
>> Does it show you a webpage or "WebKit encountered an internal error"?
> 
> With no proxy set, it shows me webkitgtk.org, and I can navigate just 
> fine (e.g. go to the planet.webkitgtk.org link, or enter https:// 
> google.com).

Same here.

Also for the previous atril report #1101807, my base bullseye VM has 
libproxy1-plugin-networkmanager installed as a dependency of package 
'gnome', so it already was installed when I attempted to reproduce the 
issue there.

Hence some additional condition seems required to trigger the issue.

Cheers!
Sylvain