After opening the viewport canvas panel, When I press the brush button or paint bucket button or any button to start painting the texture becomes squeezed and I don’t know why, When I exit the viewport canvas it returns to normal.
Normal texture: http://i.imgur.com/XdpXfMf.png
When I start painting: http://i.imgur.com/4aHTKuH.png
Somebody help me please, I occurs with all the models, It occurs only in 3ds max 2014, It didn’t occur in 3ds max 2013.