Credits for kills and killing spree stops randomly after a while

Your in-game name: Teel
Description of the bug: I stop getting credits for kills and this time even my killing spree stopped counting.
What were you doing when this bug occurs?: Killing players
Date: 2015-02-27 12:50-12:58ish
In-game screenshot/video: No, but check the logs, it just happened.
Additional information: For log reference, I wrote "[12:57:12]  Teel[7]:{FFFFFF} my spreee has stopped counting and I'm no longer getting credits" so you know where to look.

I had a 25 killing spree which is when it stopped counting (I think). If you don't log kills then check my score increasing, if you log neither then I'll just leave it as is and take a print screen next time I have it happen to me. It has happened before but that time it only stopped giving me credits but my spree kept going.

After 25 kill spree, you wont get any reminders until you reach 50 kills if I remember correctly.

Yeah there are

5 Killl Spree
10 Kill Spree
15 Kill Spree
20 Kill Spree
25 Kill Spree

50 Kill Spree

100 Kill Spree

There aren't more then that

Alright, fair enough then. Half the problem still remains though, that I stop getting credits for kills after a while. I found some old screens, they might not be enough on their own but if you can check the logs to confirm that'd work too, otherwise I can record next time it happens.

https://i.imgur.com/yuj734f.jpg First pic shows credits only; second pic credits after a kill; third pic credits after lots of kills (I only got credits from my spree, not from individual kills).

Ah yes, I see, lol never noticed that