I noticed that in UIv4, the Alert Tuning tab does not show the full Description for a datapoint. It shows a truncated snippet of the Description instead and the column has to be manually expanded if you need to see the full thing.
In UIv3 this column wraps, so each row is wider but you can see the whole Description so it is much more usable. I noticed many fields truncate in UIv4 instead of wrapping (properties under the Info tab is another example).
It would be much better for the columns to wrap so that the full value can be seen like it is in UIv3.