I've seen my comments double post occasionally when my network connection is poor. I'm not sure the cause and I have never had the developer console logging/open when it occurs. I am certain I've only clicked the post
button once though.
Here's a thread where it most recently occurred for me: Joining a table in mysqli and then fetch the matched result
In case one of the dups is deleted the ids were:
- comment76246508_44630422
- comment76246518_44630422
Newer dup - comment76484634_44751751
- comment76484636_44751751
- comment76705975_44862710
- comment76705969_44862710
- comment77499670_45268361
- comment77499675_45268361
- comment77499688_45268361
- comment77499689_45268361
- comment77741738_45390343
- comment77741734_45390343
- comment77741876_45390596
- comment77741869_45390596
I caught it with the developer console:
no second request made. Also I was running a ping during the comment and there was no drop during this comment posting.
Ping results:
PING google.com (172.217.10.14): 56 data bytes
64 bytes from 172.217.10.14: icmp_seq=0 ttl=56 time=51.558 ms
64 bytes from 172.217.10.14: icmp_seq=1 ttl=56 time=45.882 ms
64 bytes from 172.217.10.14: icmp_seq=2 ttl=56 time=41.532 ms
64 bytes from 172.217.10.14: icmp_seq=3 ttl=56 time=40.976 ms
64 bytes from 172.217.10.14: icmp_seq=4 ttl=56 time=61.285 ms
64 bytes from 172.217.10.14: icmp_seq=5 ttl=56 time=49.990 ms
64 bytes from 172.217.10.14: icmp_seq=6 ttl=56 time=52.511 ms
64 bytes from 172.217.10.14: icmp_seq=7 ttl=56 time=65.426 ms
64 bytes from 172.217.10.14: icmp_seq=8 ttl=56 time=53.711 ms
64 bytes from 172.217.10.14: icmp_seq=9 ttl=56 time=56.365 ms
64 bytes from 172.217.10.14: icmp_seq=10 ttl=56 time=59.842 ms
64 bytes from 172.217.10.14: icmp_seq=11 ttl=56 time=40.295 ms
64 bytes from 172.217.10.14: icmp_seq=12 ttl=56 time=41.938 ms
64 bytes from 172.217.10.14: icmp_seq=13 ttl=56 time=62.801 ms
64 bytes from 172.217.10.14: icmp_seq=14 ttl=56 time=45.708 ms
64 bytes from 172.217.10.14: icmp_seq=15 ttl=56 time=52.048 ms
64 bytes from 172.217.10.14: icmp_seq=16 ttl=56 time=40.067 ms
64 bytes from 172.217.10.14: icmp_seq=17 ttl=56 time=48.494 ms
64 bytes from 172.217.10.14: icmp_seq=18 ttl=56 time=46.670 ms
64 bytes from 172.217.10.14: icmp_seq=19 ttl=56 time=47.412 ms
64 bytes from 172.217.10.14: icmp_seq=20 ttl=56 time=39.616 ms
64 bytes from 172.217.10.14: icmp_seq=21 ttl=56 time=36.073 ms
64 bytes from 172.217.10.14: icmp_seq=22 ttl=56 time=57.909 ms
64 bytes from 172.217.10.14: icmp_seq=23 ttl=56 time=41.996 ms
64 bytes from 172.217.10.14: icmp_seq=24 ttl=56 time=38.335 ms
64 bytes from 172.217.10.14: icmp_seq=25 ttl=56 time=42.854 ms
64 bytes from 172.217.10.14: icmp_seq=26 ttl=56 time=44.209 ms
64 bytes from 172.217.10.14: icmp_seq=27 ttl=56 time=64.938 ms
64 bytes from 172.217.10.14: icmp_seq=28 ttl=56 time=47.034 ms
64 bytes from 172.217.10.14: icmp_seq=29 ttl=56 time=45.274 ms
64 bytes from 172.217.10.14: icmp_seq=30 ttl=56 time=43.272 ms
64 bytes from 172.217.10.14: icmp_seq=31 ttl=56 time=48.728 ms
64 bytes from 172.217.10.14: icmp_seq=32 ttl=56 time=48.056 ms
64 bytes from 172.217.10.14: icmp_seq=33 ttl=56 time=52.748 ms
64 bytes from 172.217.10.14: icmp_seq=34 ttl=56 time=41.248 ms
64 bytes from 172.217.10.14: icmp_seq=35 ttl=56 time=39.250 ms
64 bytes from 172.217.10.14: icmp_seq=36 ttl=56 time=48.956 ms
64 bytes from 172.217.10.14: icmp_seq=37 ttl=56 time=37.204 ms
64 bytes from 172.217.10.14: icmp_seq=38 ttl=56 time=55.130 ms
64 bytes from 172.217.10.14: icmp_seq=39 ttl=56 time=41.921 ms
64 bytes from 172.217.10.14: icmp_seq=40 ttl=56 time=38.433 ms
64 bytes from 172.217.10.14: icmp_seq=41 ttl=56 time=56.692 ms
64 bytes from 172.217.10.14: icmp_seq=42 ttl=56 time=45.742 ms
Additional note, this seems to only occur on the weekend (saturday/sunday).