The last item or two in a list configured using the "Show / Choose From List (Configurable)" action is not fully shown when selected unless I select the previous item and then again the last one.
The picker starts behaving the same after it is being triggered for 2nd (3rd, 4th etc. time) time:
As you can, the scroll bar barely moved from the top position.
Actually here's even a video in which you can also see that after I reach the last item and go from the first one then - no issues.
I'm using only the keyboard, no mouse/track-pad involved. Hope that it makes sense.