The Brain not working as expected (or is it me?)

[Snoopy]

hashcat (v5.1.0-1795-g08ea0002)
setup as above

Code:

Recovered........: 1/5 (20.00%) Digests
Progress.........: 10/10 (100.00%)
Rejected.........: 0/10 (0.00%)

Code:

Recovered........: 2/5 (40.00%) Digests
Progress.........: 11/11 (100.00%)
Rejected.........: 0/11 (0.00%)

Code:

Recovered........: 5/10 (50.00%) Digests
Progress.........: 12/12 (100.00%)
Rejected.........: 0/12 (0.00%)

Serverlog

Code:

Session: 0x81039c62, Attack: 0x0ebd08bb
Session: 0x83810334, Attack: 0x2dfbaaf5
Session: 0xf4ab8a45, Attack: 0x13cd2111

plz be aware, that run 2 is now not working as expected (new session-id on hash-1.txt, not dropping already used pw)
run 2 should have the same session-id like run 1 but with different attack-id as i understand the brain

im really not that deep into c, so i can not really see how session-id is calculated (i see some vars regarding hashes and salts, a loop etc.) so i can only guess, maybe the already found pw is excluded, so hash-1.txt get a new session-id.