2871262 - DB13 Backup completion status is incorrect

Although tcode DB13 scheduled backup jobs fail with RC != 0, they're reporting a completion status of "Finished successfully" in DB13 Action Details and return code 'OK' in the Dbacockpit DBA Log'.

For example, the following job log shows that job SAPJOB failed due to JCL error.

20190828170008|BKS| 1 | J E S 2 J O B L O G -- S Y S T E M D U D 6 -- N O D E N 1
20190828170008|BKS| 2 | |
20190828170008|BKS| 3 |17.00.09 JOB01670 ---- WEDNESDAY, 28 AUG 2019 ---- 
20190828170008|BKS| 4 |17.00.09 JOB01670 IEFC452I SAPJOB - JOB NOT RUN - JCL ERROR 123 
20190828170008|BKS| 5 |------ JES2 JOB STATISTICS ------ 
20190828170008|BKS| 6 | 22 CARDS READ 
20190828170008|BKS| 7 | 43 SYSOUT PRINT RECORDS 
20190828170008|BKS| 8 | 0 SYSOUT PUNCH RECORDS 
20190828170008|BKS| 9 | 2 SYSOUT SPOOL KBYTES 
20190828170008|BKS|10 | 0.00 MINUTES EXECUTION TIME

But  'Jobs > DBA Log'   shows it ran okay

Start Date     Start Time   End Date      End Time    Runtime      Action                                                Return Code
28.08.2019   17:00:09     28.08.2019  17:00:09    00:00:00     Backup System at DB2 System Level    OK

And tcode DB13 Action Details reports 'Finished Successfully'

DB2 z/OS any version
Netweaver ABAP - check release levels outlined in SAP Note 2847650.

DBA Planning Calender , KBA , BC-DB-DB2 , DB2 for z/OS , Problem