Max 14 viewport problems in edit poly sub selection mode

[wxyz]

Have a window frame which disappears when I subselect edges in Max 14 but works as usual in Max 2013. anyone else have this problem? Latest graphic drivers GTX 560

[Morne]

jip, common everyday issue. Try moving a vertex and it stays in place until you exit subobject or untill you move it AGAIN
GTX 580 latest drivers