I used add_image() to record some visualization results at each step/epoch, during training the image at each step/epoch is displayed well, but after the training is done, when i draw the knob left and right, it doesn't increase or decrease incrementally by step 1, instead step numbers can just goes like 1->2->4->6->12 ..., which is annoying, my college also has the same issue. I guess it is a front-end issue, can anyone post a fix? Thanks.