Orig DB = No Corruption, Backup/restore = Corruption?

We are setting up offline DBCC checkdbs on an offline server so we can still do our checks, but not interfere with production. When we backup the Master DB and restore it (even directly on a local SSD on the same production machine) we get 36 corruption errors when we DBCC CHECKDB the restored DB (master_restore). But when I DBCC CHECKDB the original master DB, I get no errors. Any idea?

Check Catalog Msg 3851, State 1: An invalid row (class=12,depid=0,depsubid=0) was found in the system table sys.syssingleobjrefs (class=12).

Check Catalog Msg 3851, State 1: An invalid row (class=13,depid=1,depsubid=0) was found in the system table sys.syssingleobjrefs (class=13). Check Catalog Msg 3851, State 1: An invalid row (class=60,depid=1,depsubid=0) was found in the system table sys.syssingleobjrefs (class=60). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=1,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=13,depid=2,depsubid=0) was found in the system table sys.syssingleobjrefs (class=13). Check Catalog Msg 3851, State 1: An invalid row (class=60,depid=2,depsubid=0) was found in the system table sys.syssingleobjrefs (class=60). Check Catalog Msg 3851, State 1: An invalid row (class=60,depid=3,depsubid=0) was found in the system table sys.syssingleobjrefs (class=60). Check Catalog Msg 3851, State 1: An invalid row (class=60,depid=4,depsubid=0) was found in the system table sys.syssingleobjrefs (class=60). Check Catalog Msg 3851, State 1: An invalid row (class=60,depid=5,depsubid=0) was found in the system table sys.syssingleobjrefs (class=60). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=261,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=262,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=263,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=264,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=266,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=268,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=269,depsubid=0,indepid=9,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=269,depsubid=0,indepid=10,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=273,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=274,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=277,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=278,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=279,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=280,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=26,depid=283,depsubid=0,indepid=3,indepsubid=0) was found in the system table sys.sysmultiobjrefs (class=26). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65536,depsubid=101) was found in the system table sys.syssingleobjrefs (class=76). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65536,depsubid=103) was found in the system table sys.syssingleobjrefs (class=76). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65536,depsubid=104) was found in the system table sys.syssingleobjrefs (class=76). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65536,depsubid=105) was found in the system table sys.syssingleobjrefs (class=76). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65536,depsubid=107) was found in the system table sys.syssingleobjrefs (class=76). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65537,depsubid=101) was found in the system table sys.syssingleobjrefs (class=76). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65537,depsubid=103) was found in the system table sys.syssingleobjrefs (class=76). Check Catalog Msg 3851, State 1: An invalid row (class=76,depid=65537,depsubid=107) was found in the system table sys.syssingleobjrefs (class=76). CHECKDB found 0 allocation errors and 32 consistency errors not associated with any single object. Page (1:10) in database ID 13 is allocated in the SGAM (1:3) and PFS (1:1), but was not allocated in any IAM. PFS flags 'MIXED_EXT ALLOCATED 0_PCT_FULL'. CHECKDB found 1 allocation errors and 0 consistency errors in table '(Object ID 99)' (object ID 99). CHECKDB found 1 allocation errors and 32 consistency errors in database 'master_restore'.