muomuoaabb

Im new to 3dcoat.Idont know if its a bug or just I didnt do the right way?I use freeze tool to make a mask area and then switch to move tool trying to modifiy mesh ,the mask area just turn to some rectangle and glitch?! if I change to some clay brush tool,the mask just disappear like never exsist.. Restart program or open a new blank file,the issue still remain.. Pretty sad cant use freeze tool like zbrush through Strange why I cant paste image,dont know how to use URL insert image,sorry