Version-Release number of selected component:
epiphany-runtime-3.26.5.1-1.fc27

Additional info:
reporter:       libreport-2.9.3
backtrace_rating: 4
cmdline:        epiphany
crash_function: WebKit::WaylandCompositor::Surface::flushPendingFrameCallbacks()
executable:     /usr/bin/epiphany
journald_cursor: s=e211622f366c4922b0c31e0e17c0b8fc;i=11c84d;b=3e6aa61a74064d85bce03b734f4a42a8;m=197641ef6;t=562e308e931d1;x=17a72f0742a9a7b4
kernel:         4.14.13-300.fc27.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (9 frames)
 #0 WebKit::WaylandCompositor::Surface::flushPendingFrameCallbacks() at /usr/src/debug/webkitgtk4-2.18.5-1.fc27.x86_64/Source/WebKit/UIProcess/gtk/WaylandCompositor.cpp:258
 #1 WebKit::WaylandCompositor::Surface::setWebPage(WebKit::WebPageProxy*) at /usr/src/debug/webkitgtk4-2.18.5-1.fc27.x86_64/Source/WebKit/UIProcess/gtk/WaylandCompositor.cpp:181
 #2 WebKit::AcceleratedBackingStoreWayland::~AcceleratedBackingStoreWayland() at /usr/src/debug/webkitgtk4-2.18.5-1.fc27.x86_64/Source/WebKit/UIProcess/gtk/AcceleratedBackingStoreWayland.cpp:61
 #4 std::default_delete<WebKit::AcceleratedBackingStore>::operator()(WebKit::AcceleratedBackingStore*) const at /usr/include/c++/7/bits/unique_ptr.h:78
 #5 std::unique_ptr<WebKit::AcceleratedBackingStore, std::default_delete<WebKit::AcceleratedBackingStore> >::reset(WebKit::AcceleratedBackingStore*) at /usr/include/c++/7/bits/unique_ptr.h:376
 #6 std::unique_ptr<WebKit::AcceleratedBackingStore, std::default_delete<WebKit::AcceleratedBackingStore> >::operator=(decltype(nullptr)) at /usr/include/c++/7/bits/unique_ptr.h:312
 #7 webkitWebViewBaseDispose(GObject*) at /usr/src/debug/webkitgtk4-2.18.5-1.fc27.x86_64/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.cpp:508
 #9 gtk_overlay_forall at gtkoverlay.c:625
 #10 gtk_container_destroy at gtkcontainer.c:1700

Potential duplicate: bug 1493283