Some fields that doesn't have a value are hidden on the Issue Screen until they are set.
Try using the tool: Admin -> Where is my field?
That will let you know why it is not showing on the view and how to add it :)
Here is some extra info on Configuring Fields and Screens
...It's true that there are projects in Jira; but they are merely a way to cut off issues, to tell them apart from other sections of work and to apply rules that are specific to that team (the schemes)....
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