Buttons list of wizard.State is not copied by deepcopy
I have a module add new class wizard\: \
\
class TestClass\(Wizard\)\: \
\_\_name\_\_ \= \'test\.class\' \
start \= StateTransition\(\) \
picking \= StateView\(\'test\.class\.view\'\, \
\.\.\.\.\.\. \
tasktodo \= StateTransition\(\) \
result \= StateView\(\'test\.class\.result\'\, \
\'module\.test\_class\_result\'\, \[ \
Button\(\'Done\'\, \'end\'\, \'tryton\-ok\'\)\, \
\]\) \
\
I have three modules inherit TestClass to do more features\. \
\
One module\, add new btn in result view\. \
\
\@classmethod \
def \_\_setup\_\_\(cls\)\: \
super\(TestClass\, cls\)\.\_\_setup\_\_\(\) \
\# add new button\: Save Photo \
cls\.result\.buttons\.insert\(0\, \
Button\(\'Save Photo\'\, \'photo\'\, \'tryton\-go\-next\'\, True\)\) \
\
When I installed three modules inherit TestClass \, I detect this new button \(Save Photo\)\, are duplicated \(three modules \= three buttons \= three registration class\)\. \
\
It looks like the buttons list of wizard\.State is not copied by deepcopy\: \
\
http\:\/\/hg\.tryton\.org\/trytond\/file\/4ff4668e7f2c\/trytond\/wizard\/wizard\.py\#l186 \
\
\( Start feedback in https\:\/\/groups\.google\.com\/forum\/\#\!topic\/tryton\/6iSP5hm0oAM \)
issue