The tab order for my workout page was not correct for a laptop (from a touch interface it doesn't really matter). When entering an exercise, weight, and reps, the next tab destination was the address bar. To change this I updated:
PRExerciseEntry>>#descriptionExercise / descriptionWeight / descriptionReps
from having a priority of 110 / 130 / 150 to 50 / 70 / 90
The method descriptionDetails isn't an editable field, so it was ignored (priority is still 170).