Texture Mapping

Hello, happy 2018!
I'm having a problem with texture mapping, both in version 17 and 18 of bricscad, it changes the meaning of nothing without explanation and only returns to normal by closing and reopening the drawing.
In version 14, 15 and 16 funcina perfectly, someone knows how to solve this?

thank for the attention

Adilson S Gomes
www.idcad.com.br
São Paulo - Brazil

Before bug map:

After bug map:

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