I've been scouring Google and any where else I can find to a solution to this problem, or even an explanation of why this happens... So I'm hoping someone here can help me out!
I have several visualisation that attempt to show an aggregate count of the log message that was posted (E.G. Payment failed due to incorrect card details). I have these grouped in a chart, but several of the messages are grouped as "Missing" instead of the full message. Where as other messages are fine.
I suspect that this has something to do with the characters used within the message; I cannot post the actual message (security) but an example would be,
[Lorem=ipsum-1] dolor sit -8 amet.