With sqlserver 2019 and sqlserver jdbc drivers 11.2, testing of named-instance was missed out.
Hence JS 8.1.x, has not been certified with Sqlserver 2019.
STR:
1. Attempt to install / upgrade Jaspersoft 8.1.1 on a Named-Instance Microsoft Sql Server
2. After being prompted and entering correct database connection details the install fails
Expected: Jaspersoft install on Named-Instance to complete successfully
Actual: Jaspersoft install fails with the follow error - 'Unable to connect Jasper Database'
This is under review and being tracked as DE78268.