Sure!

Wow... so it's not just "contains".. that's literally the entire string!
Have you tried contains "Envoy", that doesn't seem like it would show up in a lot of other user agents.... (this at least can check if the / is confusing things)
And you are sure that this data is coming into your tracking suite? Do you have an eVar set up to track the user agent that you can use to confirm..
The only other place you can get User Agent from your Adobe Data, that I am aware of, is your Raw Data feeds... but this you have to be careful of, since there is a special exclude data column and other processing that you need to take into consideration... and if you don't already have a process in place may not be a good option.
Or maybe you are confirming this simply by running in an isolated Dev environment and correlating the traffic in a Dev suite... I can see that what you sent is a server log, not from Adobe Analytics itself... so it's always a good idea to check everything 🙂