We have noticed an issue with Crontab formats getting changed automatically. Steps to reproduce it are as below:
The Crontab's value is set to "0 12 * * 1,2,3,4,5"
The Crontab's value has changed to "0 12 * * 3,4,5,6,0"
This issue is being tracked via DE62781.
Version: 15.9.2, 15.9.3
The issue is currently under review by Product Management.