Description of problem:
Every time I browse on extensions.gnome.org/local, epiphany crashes. Note that this happens with epiphany running in a Gnome+Wayland session.
Browsing extensions.gnome.org/local with firefox (running under wayland, but with X backend) it works fine. Seems like the gnome-shell-extensions-plugin isn't ready for wayland…

This might also be related to the other bug in GLib where the X display environment variable is set to a wayland desktop number thus making all applications depending on X crash. See https://bugzilla.redhat.com/show_bug.cgi?id=1261672

Version-Release number of selected component:
epiphany-runtime-3.18.0-1.fc23

Additional info:
reporter:       libreport-2.6.2
backtrace_rating: 4
cmdline:        epiphany
crash_function: INT_cairo_surface_set_device_scale
executable:     /usr/bin/epiphany
kernel:         4.2.1-300.fc23.x86_64
runlevel:       N 5
type:           CCpp

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 INT_cairo_surface_set_device_scale at cairo-surface.c:1712
 #1 WebCore::cairoSurfaceSetDeviceScale at /usr/src/debug/webkitgtk-2.10.0/Source/WebCore/platform/graphics/cairo/CairoUtilities.cpp:292
 #2 WebKit::BackingStore::createBackend at /usr/src/debug/webkitgtk-2.10.0/Source/WebKit2/UIProcess/cairo/BackingStoreCairo.cpp:72
 #3 WebKit::BackingStore::incorporateUpdate at /usr/src/debug/webkitgtk-2.10.0/Source/WebKit2/UIProcess/cairo/BackingStoreCairo.cpp:89
 #5 WebKit::DrawingAreaProxyImpl::incorporateUpdate at /usr/src/debug/webkitgtk-2.10.0/Source/WebKit2/UIProcess/DrawingAreaProxyImpl.cpp:221
 #6 IPC::callMemberFunctionImpl<WebKit::DrawingAreaProxy, void (WebKit::DrawingAreaProxy::*)(unsigned long, WebKit::UpdateInfo const&, WebKit::LayerTreeContext const&), std::tuple<unsigned long, WebKit::UpdateInfo, WebKit::LayerTreeContext>, 0ul, 1ul, 2ul>(WebKit::DrawingAreaProxy*, void (WebKit::DrawingAreaProxy::*)(unsigned long, WebKit::UpdateInfo const&, WebKit::LayerTreeContext const&), std::tuple<unsigned long, WebKit::UpdateInfo, WebKit::LayerTreeContext>&&, std::index_sequence<0ul, 1ul, 2ul>) at /usr/src/debug/webkitgtk-2.10.0/Source/WebKit2/Platform/IPC/HandleMessage.h:16
 #7 IPC::callMemberFunction<WebKit::DrawingAreaProxy, void (WebKit::DrawingAreaProxy::*)(unsigned long, WebKit::UpdateInfo const&, WebKit::LayerTreeContext const&), std::tuple<unsigned long, WebKit::UpdateInfo, WebKit::LayerTreeContext>, std::make_index_sequence<3ul> >(std::tuple<unsigned long, WebKit::UpdateInfo, WebKit::LayerTreeContext>&&, WebKit::DrawingAreaProxy*, void (WebKit::DrawingAreaProxy::*)(unsigned long, WebKit::UpdateInfo const&, WebKit::LayerTreeContext const&)) at /usr/src/debug/webkitgtk-2.10.0/Source/WebKit2/Platform/IPC/HandleMessage.h:22
 #8 IPC::handleMessage<Messages::DrawingAreaProxy::DidUpdateBackingStoreState, WebKit::DrawingAreaProxy, void (WebKit::DrawingAreaProxy::*)(unsigned long, WebKit::UpdateInfo const&, WebKit::LayerTreeContext const&)> at /usr/src/debug/webkitgtk-2.10.0/Source/WebKit2/Platform/IPC/HandleMessage.h:92
 #9 WebKit::DrawingAreaProxy::didReceiveMessage at /usr/src/debug/webkitgtk-2.10.0/x86_64-redhat-linux-gnu/DerivedSources/WebKit2/DrawingAreaProxyMessageReceiver.cpp:50
 #10 IPC::MessageReceiverMap::dispatchMessage at /usr/src/debug/webkitgtk-2.10.0/Source/WebKit2/Platform/IPC/MessageReceiverMap.cpp:102