Issue Summary

Hitting enter while creating an issue opens a new popup window if the create issue screen contains Assets' custom fields

This is reproducible on Data Center: yes

Steps to Reproduce

1. Install JSM of version 9.12.4/5.12.4
2. Create a new project of type "Assets IT Service Management" or any type like ITSM or helpdesk
3. In the create issue screen ass any Assets' custom fields (example:Affected Business Service, Affected Server Components, Affected Server)
4. Now in the newly created project try to create a new issue of type Incident and then fill the summary and hit "Enter" on the keyboard instead of the Create button

Expected Results

A new issue gets created without issues.

Actual Results

A new popup will be displayed to fill the "Affected Business Service" field though this is not a required field in the Jira project field configuration scheme. 

Workaround

Instead of using the Enter key in keyboard, try clicking on "Create" button and that should create issues.