Hello,
I suppose it is a issue on JIRA 9 (on jira8 it is working fine) when I want to search for issues, so I click on menu item Search for Issues from Issue Menu of Jira, it continuous show loader and page its not loaded first time, from second time it is working fine , view attach screenshot.
If anyone is facing this let me know , is this known issue for Jira 9 or not???