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

[Adrian Bunk]

On Fri, Oct 31, 2025 at 11:05:46AM +0100, Emilio Pozuelo Monfort wrote:
> Hi,
> 
> 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"?

> Cheers,
> Emilio

cu
Adrian