With the previous version of Task View, it was obvious if there was more content to show in the Task Description area.
This is because the "Show More" button always had some content behind it that was faded.
So not only did you have a "show more" button, but you could also see some of this content.
With Task View 3.0, it is rare to get any faded content behind the "show more" button.
It feels like the previous version expanded the Task Description area a bit to show this faded content, whereas the 3.0 version seem to favour making sure there is only white space behind the "show more" button.
So now, visually, it is much harder to quickly see that there is more content to see, and the "show more" button is easily missed.