#1 ~tell sometimes repeats itself

See these logs:

12:55 <@vitali64> ~tell Andrew << Use this and tell me if this has bugs
12:55 <@BlauBot> vitali64: I'll tell Andrew that when they're around.
12:55 <@BlauBot> Andrew: vitali64 wanted to tell you this: Use this and tell me if this has bugs
12:55 <@BlauBot> Andrew: vitali64 wanted to tell you this: Use this and tell me if this has bugs
12:55 <@BlauBot> Andrew: vitali64 wanted to tell you this: Use this and tell me if this has bugs
12:55 <@BlauBot> Andrew: vitali64 wanted to tell you this: Use this and tell me if this has bugs
12:56 <@BlauBot> Andrew: vitali64 wanted to tell you this: Use this and tell me if this has bugs
12:56 <@BlauBot> Andrew: vitali64 wanted to tell you this: Use this and tell me if this has bugs
12:56 <@vitali64> Ah

BlauBot (running vIRCBot) sometimes tells the message multiple times even if the one that's supposed to receive the message didn't talk.

Requires fix.

But when doing that with exactly the same message, it doesn't happen. Weird.

13:08 <@vitali64> ~tell vitali64[m] << Use this and tell me if this has bugs
13:08 <@BlauBot> vitali64: I'll tell vitali64[m] that when they're around.
13:09 <@vitali64[m]> he
13:09 <@BlauBot> vitali64[m]: vitali64 wanted to tell you this: Use this and tell me if this has bugs
13:09 <@vitali64> ok

• vitali64[m] is me, but using matrix.