Cannot get the instance segmentation results from AI2THOR

[liuxz-cs]

When I initialize the controller with renderInstanceSegmentation = True and renderDepthImage = True， and perform a successful action, I can get the last_event.frame and last_event.depth_frame, but the last_event.instance_segmentation_frame is None. So can we obtain the segmentation results？

[mattdeitke]

I think this is the same as https://github.com/allenai/ai2thor/issues/867. You might need to update your version, or change renderInstanceSegmentation=True to renderObjectImage=True.