polar list does not list all objects

[doutriaux1]

import vcsaddons
polar = vcsaddons.createpolar()
polar.list()

returns

graphics method =  Gpo
name =  Gpo_486
datawc_x1 =  1e+20
datawc_x2 =  1e+20
datawc_y1 =  1e+20
datawc_y2 =  1e+20
xmtics1 =  
xmtics2 =  
ymtics1 =  
ymtics2 =  
xticlabels1 =  {0: '0 (2pi)', 0.7853981633974483: 'pi/4', 3.9269908169872414: '5pi/4', 5.497787143782138: '7pi/4', 1.5707963267948966: 'pi/2', 4.71238898038469: '3pi/2', 2.356194490192345: '3pi/4', 3.141592653589793: 'pi'}
xticlabels2 =  *
yticlabels1 =  *
yticlabels2 =  *
xaxisconvert =  linear
yaxisconvert =  linear
legend =  None
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