The mailing list for listmasters using Sympa

[Muhammed Sameer <address@concealed>]

Salaam,

One of my users on a mailing list lets say address@concealed tried to change 
their emailaddress from address@concealed to address@concealed.

The change did take place but surprisingly what occurred was that I got a 
error message from sympa that said  

<snip>
User address@concealed has encountered an internal server error
(Web interface - ACTION : Command process - LIST : address@concealed) :

Subscriber 'address@concealed' is not found in list list-100.

See logs for more details.
</snip>

Looking in the logs further I found this
<snip>
ar 24 16:49:26 extranet wwsympa[27247]: [robot list.com] [client 192.168.1.3] 
[user address@concealed] [list list-100] main::do_edit
subscriber() do_editsubscriber(address@concealed)
Mar 24 16:49:27 extranet wwsympa[27247]: [robot list.com] [client 
192.168.1.3] [user address@concealed] [list list-100] main::do_edit
subscriber() do_editsubscriber(address@concealed)
Mar 24 16:49:33 extranet wwsympa[27247]: [robot list.com] [client 
192.168.1.3] [user address@concealed] [list list-100] main::do_set(
) do_set(not_me, noconceal)
Mar 24 16:49:33 extranet wwsympa[27247]: [robot list.com] [client 
192.168.1.3] [user address@concealed] [list list-100] main::do_subo
ptions() do_suboptions()
Mar 24 16:49:33 extranet wwsympa[27247]: [robot list.com] [client 
192.168.1.3] [user address@concealed] [list list-100] main::do_subo
ptions() do_sub_options: subscriber address@concealed not found
</snip>

Is this an anomaly ? can anyone please point out whats wrong here ?

wa salaam,
Muhammed Sameer