Suppose i edit issue and entered some data on that edited issue field (let consider "Label" field).
When i click on "Update" button then immediately one pop-up msg was displayed like :
"You have entered new data on this page. If you navigate away from this page without first saving your data, the changes will be lost."
But if i won't be done any changes (just i edit the issue means nothing to be added) and when i click "Cancel" button then also same msg was popped-up but this time that msg didn't make any sense.
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