Here are the step to reproduce the issue:

1. Create a new project TEST on JIRA then create one issue TEST-1.
2. Run the JQL "project =TEST", which will return only one result.
3. Create a new page and insert a JIRA macro with the JQL then insert the macro on the page.
4. The JIRA issue macro transfer the search JQL into "KEY= TEST-1" which is the issue link. Even new issue created, the JQL will not convert back to initial query.

The issue is reproduced after upgrade the JIRA marco to version 5.0.

As a workaround solution, you can create one more issue before reinsert the same JQL in the JIRA issue macro.