Segmentation Paint effect paints on current and next slice

Hi there,

whenever I use the paint effect and paint the area of interest on the current slice, I find some an automatic painting effect on the next slice. this problem came up after updating to the latest release! What shall I do to get rid of this problem? I want to do manual segmentation, one by one! please see the attached pdf for more clarification.

(Attachment image 1 and 2.pdf is missing)