Hi all devs, Today I found many subtickets doesn't show properly under parent.
For example, YARN-6875 is the parent of YARN-7072. But from YARN-6875's sub ticket, YARN-7072 isn't shown here. I found many sub-tickets are gone from parent JIRA, such as YARN-6223 (there were ~20+ sub tickets), YARN-2492 (There were ~70-80 sub tickets). Are there any changes recently to Apache JIRA? Thanks, Wangda
