Transition screen removed when project admin edits a transition

Problem

The relevant transition screen gets removed when a project admin without Jira Administrator global permission attempts to edit a transition.

Environment

Jira

Steps to Reproduce

1. Create a new project (I used Scrum software development template)
2. Modify one of the transitions in the workflow to add a transition screen
   
3. Create a new regular user
4. Grant the 'Administer Projects' permission to this regular user
5. Log in as this regular user and navigate to (Project > Project settings > Workflows > relevant workflow > Edit)
6. Edit the relevant transition where the screen was added
   
   • Notice that the 'Screen' field is not able to be edited. This is expected since project admins are not supposed to be able to select/update screens
7. Click 'Save'

Expected Results

1. Changes are saved and the transition still has a screen configured

Actual Results

1. Changes are saved but the transition screen is removed
   

Workaround

No known workaround

Notes

• Only happens when the 'regular' user does not have 'Jira Administrators' global permission
• Project admins are not capable of selecting/updating transition screens so by right shouldn't be removing them as well: Managing project permissions

  The project administrator can create, update, or delete transitions. But they can't select or update a screen used by the transition nor edit and view a transition's properties, conditions, validators, or post-functions.

• This ultimately renders project admin to be unable to make any changes to transition with screens