Description of problem: When I try to install a GNOME-Shell extension with Epiphany/Web, and also when viewing for the first time the page of installed extensions. Moreover, Epiphany/Web don't install the extensions. Version-Release number of selected component: webkitgtk4-2.14.1-1.fc24 Additional info: reporter: libreport-2.7.2 backtrace_rating: 4 cmdline: /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess 58 /usr/lib64/mozilla/plugins/libgnome-shell-browser-plugin.so crash_function: WebKit::NPObjectMessageReceiver::hasProperty executable: /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess global_pid: 28527 kernel: 4.7.9-200.fc24.x86_64 pkg_fingerprint: 73BD E983 81B4 6521 pkg_vendor: Fedora Project runlevel: N 5 type: CCpp uid: 1000 Truncated backtrace: Thread no. 1 (10 frames) #0 WebKit::NPObjectMessageReceiver::hasProperty at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Shared/Plugins/NPObjectMessageReceiver.cpp:133 #1 IPC::callMemberFunctionImpl<WebKit::NPObjectMessageReceiver, void (WebKit::NPObjectMessageReceiver::*)(WebKit::NPIdentifierData const&, bool&), std::tuple<WebKit::NPIdentifierData>, 0ul, std::tuple<bool>, 0ul>(WebKit::NPObjectMessageReceiver*, void (WebKit::NPObjectMessageReceiver::*)(WebKit::NPIdentifierData const&, bool&), std::tuple<WebKit::NPIdentifierData>&&, std::tuple<bool>&, std::integer_sequence<unsigned long, 0ul>, std::integer_sequence<unsigned long, 0ul>) at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Platform/IPC/HandleMessage.h:27 #2 IPC::callMemberFunction<WebKit::NPObjectMessageReceiver, void (WebKit::NPObjectMessageReceiver::*)(WebKit::NPIdentifierData const&, bool&), std::tuple<WebKit::NPIdentifierData>, std::integer_sequence<unsigned long, 0ul>, std::tuple<bool>, std::integer_sequence<unsigned long, 0ul> >(std::tuple<WebKit::NPIdentifierData>&&, std::tuple<bool>&, WebKit::NPObjectMessageReceiver*, void (WebKit::NPObjectMessageReceiver::*)(WebKit::NPIdentifierData const&, bool&)) at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Platform/IPC/HandleMessage.h:33 #3 IPC::handleMessage<Messages::NPObjectMessageReceiver::RemoveProperty, WebKit::NPObjectMessageReceiver, void (WebKit::NPObjectMessageReceiver::*)(WebKit::NPIdentifierData const&, bool&)> at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Platform/IPC/HandleMessage.h:112 #4 WebKit::NPObjectMessageReceiver::didReceiveSyncNPObjectMessageReceiverMessage at /usr/src/debug/webkitgtk-2.14.1/x86_64-redhat-linux-gnu/DerivedSources/WebKit2/NPObjectMessageReceiverMessageReceiver.cpp:73 #5 WebKit::NPRemoteObjectMap::didReceiveSyncMessage at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Shared/Plugins/NPRemoteObjectMap.cpp:226 #6 WebKit::WebProcessConnection::didReceiveSyncMessage at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/PluginProcess/WebProcessConnection.cpp:155 #7 IPC::Connection::dispatchSyncMessage at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Platform/IPC/Connection.cpp:789 #8 IPC::Connection::dispatchMessage at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Platform/IPC/Connection.cpp:856 #9 IPC::Connection::SyncMessageState::dispatchMessages at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/Platform/IPC/Connection.cpp:164
Created attachment 1214550 [details] File: backtrace
Created attachment 1214551 [details] File: cgroup
Created attachment 1214552 [details] File: core_backtrace
Created attachment 1214553 [details] File: dso_list
Created attachment 1214554 [details] File: environ
Created attachment 1214555 [details] File: exploitable
Created attachment 1214556 [details] File: limits
Created attachment 1214557 [details] File: maps
Created attachment 1214558 [details] File: mountinfo
Created attachment 1214559 [details] File: namespaces
Created attachment 1214560 [details] File: open_fds
Created attachment 1214561 [details] File: proc_pid_status
Created attachment 1214562 [details] File: var_log_messages
*** This bug has been marked as a duplicate of bug 1290810 ***