PASCAL VOC with ResNet 152 - mask is not shown

[suresh-s]

I am training for the dataset PASCAL VOC with ResNet 152. I have removed last layer of weights (_detectron mask rcnn resnet 152 model) which and used as Pretrained model. after training converges, If i run a demo, i am getting following image

Mask is drawn next to Bounding box.

Is this issue on Demo code or Training itself is not proper?

How can i debug it?
Where is the problem?