Get projects API doesn't return projects if JQL returns all but a few excluded projects

Summary

On creating a board with a JQL filter which results in issues from all but a few excluded project, the following REST API,

GET /rest/agile/1.0/board/{boardId}/project

does not return any projects for that board.

Examples of affected JQL queries,

• project != ABC
• project NOT IN (ABC,XYZ)

Steps to Reproduce

1. Create a board in Jira
2. Modify the filter query of the board to include the conditions shown in the above examples.
3. Get results from the REST API command above

Expected Results

The query returns projects that are listed based on the JQL query

Actual Results

No projects are shown