We see following behaviour on Jira
Assume that you have an issue about tracking a surgery to be performed on Pete.
John and Sarah are both medical assistants that are describing what exactly should be done.
John is assuming that Pete's arm needs to be operated on, while Sarah believes it is the leg (this is a made up example)
So John changes first the summary to 'Operates Pete's arm', and then the description to 'The left arm' and some other details.
At the same time, Sarah is modifying the same issue, and first changes the description to 'The right leg' and some other details (before John's modification is persisted), and then finds out that the summary also needs to be updated to 'Operate Pete's leg'
The way that Jira (cloud) works today is that you will end up with an issue having as summary 'Operate Pete's leg' and description 'The left arm'
How can you avoid this type of inconsistencies?
PS. We tried it out (not the operation)