2459420 - The shared memory area CL_SOAP_SHM_MET does not get released

The shared memory area CL_SOAP_SHM_MET (transaction SHMM) grows continuously without released even after applied Note 1806661.
And there is dump found from ST22 for following dumps:

1. UNCAUGHT_EXCEPTION with ABAP Program CX_XMS_SYSTEM_ERROR ===========CP
2. SYSTEM_SHM_OPEN_CHANGE_LOCK in area CL_SOAP_SHM_WP_MET

• SAP NetWeaver 7.3
• SAP enhancement package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.4
• SAP NetWeaver 7.5

Metering, CL_SOAP_SHM_MET, SHMM, UNCAUGHT_EXCEPTION, CX_XMS_SYSTEM_ERROR, SYSTEM_SHM_OPEN_CHANGE_LOCK, CL_SOAP_SHM_WP_MET, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31,PI 7.40, PI 7.50, NetWeaver, XI, SICF, Service, Services, ICF service, ICF_GDPR, dump, ST22, open change lock on transactional area in COMMIT, code offset, SHMM. , KBA , BC-XI-IS , Integration Server , Problem