Not sure of this is related to recent updates or if I just haven’t noticed it before. I had a threshold workout level of 3.3 going into a workout that had a WL of 5.2. I completed it and the workout level summary after completing it says “Completed: 5.2/4.1”.
In this case it means you overachieved the workout.
The original workout level was 4.1 but the post analysis of your actual ride adjusted it up to 5.2.
A point of confusion is that the score for past workouts in your calender is also adjusted to reflect the work done (5.2).
But if you were to search for the original workout in the workout library then (assuming everything has worked as it should) you will see that the original score was 4.1.