Hashcat aborting (bug?)

I set a hashcat run to run overnight. In the morning, it had stopped. The last status is:

Session..........: emailspecialmask

Status...........: Exhausted
Hash.Type........: MD5
Hash.Target......: C:\Users\<redacted>\Documents\lefts\090217_md5_left.txt
Time.Started.....: Mon Sep 04 21:56:10 2017 (2 hours, 49 mins)
Time.Estimated...: Thu Nov 05 09:32:03 2020 (3 years, 61 days)
Guess.Base.......: File (C:\Users\<redacted>\Documents\wordlists\emaildomainsv2U.txt), Right Side
Guess.Mod........: Mask (?1?1?1?1?1?1?1?1?1) [9], Left Side
Guess.Charset....: -1 ?l?d, -2 Undefined, -3 Undefined, -4 Undefined
Speed.Dev.#1.....:   566.1 MH/s (0.46ms)
Recovered........: 36/960851 (0.00%) Digests, 0/1 (0.00%) Salts
Recovered/Time...: CUR:0,9,N/A AVG:0,12,306 (Min,Hour,Day)
Progress.........: 5656097587200/495206348715196416 (0.00%)
Rejected.........: 0/5656097587200 (0.00%)
Restore.Point....: 4876/4876 (100.00%)
Candidates.#1....: s0dphgere -> y9pzlhane@zzom.co.uk
HWMon.Dev.#1.....: Temp: 57c Fan: 55% Util: 62% Core:1163MHz Mem:2505MHz Bus:16

Started: Mon Sep 04 21:56:06 2017
Stopped: Tue Sep 05 00:45:25 2017

I attempted to restart it, using the command, with the -s value from the progress above to resume:

hashcat64.exe -m 0 -a 7 --remove -o "C:\Users\<redacted>\Documents\lefts\090217_md5_cracked.txt" --status --markov-hcstat="C:\Users\<redacted>\Documents\hashcat-3.6.0\082617_founds.hcstat" --session=emailspecialmask  "C:\Users\<redacted>\Documents\lefts\090217_md5_left.txt" -1 ?l?d ?1?1?1?1?1?1?1?1?1 "C:\Users\<redacted>\Documents\wordlists\emaildomainsv2U.txt" -s 5656097587200

But all it did was abort:

* Keyspace..: 495206348715196416

Restore value is greater than keyspace.

Hashcat 3.6.0 on Windows 7 x64.

Am I missing something or is this a bug?