[fixed] case_clause / W3D crashes unxepected.

[Hank]

OS/ Linux Mint

W3D crashes unxepected.


Dump written 2018-12-7_18-41
Version: 2.2.1
Window: [wings_frame,wings_frame,<0.70.0>]
Reason: {case_clause,
#{action => undefined,
ch =>
{split,
{wx_ref,74,wxSplitterWindow,[]},
splitVertically,
{split,
{wx_ref,1032,wxSplitterWindow,[]},
splitHorizontally,
{split,
{wx_ref,766,wxSplitterWindow,[]},
splitHorizontally,
{win,
{wx_ref,661,wxPanel,[]},
{wx_ref,644,wxPanel,<0.81.0>},
wings_outliner,"Outliner",
{{wx_ref,662,wxPanel,[]},
{wx_ref,666,wxStaticText,[]}},
#{close => true,move => true}},
{win,
{wx_ref,741,wxPanel,[]},
{wx_ref,687,wxSplitterWindow,<0.82.0>},
{object,geom},
"Geometry Graph",
{{wx_ref,742,wxPanel,[]},
{wx_ref,746,wxStaticText,[]}},
#{close => true,move => true}}},
{split,
{wx_ref,1079,wxSplitterWindow,[]},
splitHorizontally,
{win,
{wx_ref,1006,wxPanel,[]},
{wx_ref,767,wxPanel,<0.83.0>},
{tweak,tweak_palette},
"Tweak",
{{wx_ref,1007,wxPanel,[]},
{wx_ref,1011,wxStaticText,[]}},
#{close => true,move => true}},
{split,
{wx_ref,1686,wxSplitterWindow,[]},
splitHorizontally,
{win,
{wx_ref,1053,wxPanel,[]},
{wx_ref,1033,wxPanel,<0.84.0>},
{plugin,sel_groups},
"Selection Groups",
{{wx_ref,1054,wxPanel,[]},
{wx_ref,1058,wxStaticText,[]}},
#{close => true,move => true}},
{win,
{wx_ref,1660,wxPanel,[]},
{wx_ref,1089,wxScrolledWindow,<0.85.0>},
palette,"Palette",
{{wx_ref,1661,wxPanel,[]},
{wx_ref,1665,wxStaticText,[]}},
#{close => true,move => true}}}}},
{win,
{wx_ref,603,wxPanel,[]},
{wx_ref,555,wxGLCanvas,[]},
geom,"Geometry",
{{wx_ref,604,wxPanel,[]},
{wx_ref,608,wxStaticText,[]}},
#{close => false,move => false}}},
frame => {wx_ref,35,wxFrame,<0.70.0>},
loose => #{},op => undefined,
szr => {wx_ref,73,wxBoxSizer,[]}}}

Stack trace:
[{wings_frame,handle_event,2,[{file,"wings_frame.erl"},{line,401}]},
{wx_object,handle_msg,5,[{file,"wx_object.erl"},{line,468}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]

BR, Hank