In the Test plan Board, its showing incorrect data and counter in Orphan folder

Description
When we installed Xray version 6.3.12, the Test Plan board in the orphan folder is displaying wrong data from a large number of Tests, and a top-right erroneous counter

Pre-conditions

How to reproduce

1. In Jira Data Center, install an Xray with version 6.3.12
2. Create an Xray project, then create a Test Plan issue
3. After that, navigate to Test Plan Board, and click on the Orphan folder

Actual result/Attachments

When clicking on the Orphan folder, it displays wrong data from a large number of Tests, and a top-right erroneous counter

Expected result
Display the correct information 

Version

• Xray 6.3.12