(figwheel.repl/conns) shows all the connected clients, but the hot-reload is working only on the last connected

I found something curious: I'm new to Clojure and using Windows with git bash and java 10 right now (don't know it that's relevant). I did lein new figwheel-main and then lein fig:build, everything starting correctly and everything seems to be working. However, I get the following output:

Opening URL 
Compile Exception: C  
To quit, type: :cljs/quit