You have configured one or more operations in the configuration but when clicking the "Publish Issue" item in the "More" menu there are no selectable operations.
The "Publish Issue" item is shown whenever there is at least one operation, where the current issue matches the project and issue type filter and the current user has the permission to perform it. When listing the available operations, additionally to the permissions and other filters, the JQL Filter is checked. So apparently the current issue does not match the JQL Filter of any operation.
The JQL Filter is only checked during the operation selection for performance reasons. Otherwise the filters of all operations had to be checked every time any issue was viewed.