Version-Release number of selected component:
epiphany-runtime-3.16.0-2.fc22

Additional info:
reporter:       libreport-2.5.1
backtrace_rating: 4
cmdline:        epiphany
crash_function: _gtk_css_value_ref
executable:     /usr/bin/epiphany
global_pid:     14829
kernel:         4.0.0-1.fc22.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 _gtk_css_value_ref at gtkcssvalue.c:51
 #1 gtk_css_static_style_set_value at gtkcssstaticstyle.c:165
 #2 gtk_css_static_style_new_update at gtkcssstaticstyle.c:279
 #3 update_properties at gtkstylecontext.c:824
 #4 _gtk_style_context_validate at gtkstylecontext.c:3050
 #10 gtk_container_idle_sizer at gtkcontainer.c:1856
 #11 _g_closure_invoke_va at gclosure.c:831
 #13 g_signal_emit_by_name at gsignal.c:3401
 #14 gdk_frame_clock_paint_idle at gdkframeclockidle.c:408
 #20 g_main_context_iteration at gmain.c:3869