In v8.6.1, Backup Templates that create both full and transaction log (TLOG) backups to Amazon S3 will fail for either the TLOG backup, or the Full backup (4238746)

After upgrading to v8.6.1, Backup Templates that create both full and transaction log (TLOG) backups to Amazon S3 will fail for either the TLOG backup, or the Full backup portion of the template job (but not both. One will run fine) with no error.

In v8.6.1.33 the following error is seen for the TLOG backup.  (Please note the full backup completes fine, only the TLOG fails.)

06:51:58.986 Main  MESSAGES::ErrorMessage Error: 10300, Msg: Backup of database "LS" failed.
No files/devices have been specified

In v8.6.1.22 no error is seen and the job is shown as “successful” in SQL Server Management Studio. Again the full backup completes fine, only the TLOG backup fails however, no error is reported in the logs or elsewhere.
The log shows only the below..

INFO>LiteSpeedT for SQL Serverr Version 8.6.1.22 (64bit)
Copyright 2017 Quest Software Inc. ALL RIGHTS RESERVED.</INFO>

<INFO/>

</MESSAGES>
07:45:59.298 Main  CLSExeBase::ReportResu Writing 154 characters to stdout
07:45:59.298 Main  CLSExeBase::ReportResu } = 1 (true)
07:45:59.298 Main  main                   } = -1