Yup, Poser does really strange things when you make a figure semi-transparent. Worst of all is that parts like ears and noses can show up at weird angles, because they're seen "from inside" which throws Poser into a confused tizzy. The only decent solution, as the other answers said, is to render the object by itself, opaque as usual, then use 2D layers to put it back into the scene with transparency. You might want to mix a white mask onto it as well.

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