Another way to reproduce this

1. Create a project or open a project you don't need anymore
2. Go to project settings->delete project
3. Delete

Expect:
after project got deleted, maybe the button should be changed to create project?

Actual
on the top left corner, the button name changes to variable string "back to $project.name". Click the button take me back to delete project screen again.

Steps to reproduce:

• Log into a JIRA project as an administrator of said project.
• Add yourself to the "Administrators" field
• Change the Project Lead to somebody else.
• Save through the form.

Expected Result:
I'm not entirely positive what the expected result should be, but i get a rejection that says i cannot change the lead.

Actual Result:
I receive an error message, with a button that shows "Back to project: $project.name"

If I click on said button, i receive a message that says "No project could be found with key '${project.key}'"

Reproducible:
Yes

Notes:
I go back to the administration panel, and it says I do not have administration access to any projects. The Project Lead was also successfully changed.