I’ve noticed this a few times but have only just been able to re-create it.
Essentially, if you have one site started in Local, and it’s running a script or performing a large update, starting or stopping a second site in Local will cause a ‘hiccup’ and make the first site stop working and give a ERR_CONNECTION_REFUSED error. I’ve been able to replicate this fairly consistently.
Not sure if this is due to a memory limit or something to do with accessing a hosts file whilst the second site is starting up.
Has anyone else encountered this?