[vtkusers] PolyData actor is invisible after applying scale(1, 1, -1)

[Jana Sefcikova]

Hi,
try scaling with 1,1,1 whether your scene is correctly rendered, than with
other positive factors for example 2,2,2 , finally with some negative
factors. Perhaps negative factor could be problem, scaling by negative
factor logically does not make much sense for me, regardless that it could
pass..

j.
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