Incorrect death messages in non-english languages

In any language besides English:
Upon death, the death messages aren't displayed properly.

If killed by a mob, the message reads:

was slain/shot/blown up by <username>

Instead of:

<username> was slain/shot/blown up by <mob name>

If killed by other means, the message simply states the cause of death, with the username omitted. E.g.

drowned

To reproduce:
Die. In any way, shape or form.