I'm using wordfence with cloudflare and get messages like
Wordfence can't get the IP of clients and therefore can't operate. We received IP: . X-Forwarded-For was: REMOTE_ADDR was: xx.xxx.xxx.
at the top of the the liveview screen - the ip address listed is my ip address less the remaining digits - the error message may just be truncated - it runs to the extreme right hand end of the window (full screen, so I can't extend it)
the lower display of current activity does show normal activity, so apart from detecting my address while logged in, it seems to be working OK. (locations given are believable)