Third party extensions as per apport error log:
...
WARNING: library /usr/lib/mozilla-thunderbird/extensions/{847b3a00-7ab1-11d4-8f02-006008948af5}/components/libenigmime.so not found in system packages -- ignoring
...
Tagging as mt-confirm mt-needtestcase for further processing
Retrace done.
Extract from retraced stacktrace: paint_shadow (style=0x8140618, window=0x821e298, widget_ paint (widget= MOZ_GTK_ ENTRY, :FindBackground (aPresContext= 0x841ded8, :PaintBackgroun dWithSC ( :IsVisibleForPa inting (this=0x8765bb0, 0x841ded8,
...
#3 <signal handler called>
#4 real_draw_box (style=0x8140618, cr=0x8a9a328,
#5 draw_shadow (style=0x8140618, window=0x821e298,
#6 IA__gtk_
#7 moz_gtk_
#8 ~nsNativeThemeGTK (this=0x8431958)
#9 nsCSSRendering:
#10 nsCSSRendering:
#11 nsFrame:
#12 nsBoxFrame::Reflow (this=0x8765bb0, aPresContext=
...
Third party extensions as per apport error log: mozilla- thunderbird/ extensions/ {847b3a00- 7ab1-11d4- 8f02-006008948a f5}/components/ libenigmime. so not found in system packages -- ignoring
...
WARNING: library /usr/lib/
...
Tagging as mt-confirm mt-needtestcase for further processing