Cannot modify workouts

Hi! 

Since update of April, 25 I can't modify the running workouts previously created, and can't move one workout to another date in calendar.

When I try, app returns to the page of the workouts or the calendar. 

I can create workouts, delete workouts, add them to the calendar, or remove from calendar without problems.

I have waited for updates, hoping a correction, but also with last update (I have 5.13.1) the bug persists.

Any suggestion? 

Thanks.