create-react-app "production" npm run start node process is not closing files

[aggaton]

I tried running the basic create-react-app out of the box using the serve -s command, got the pid from ps -ef, ran lsof |grep pid|wc -l after each request, and I noticed how the number kept going up, like the cache was not kicking in, the app seemed to be opening the same files over and over again without closing. If I start the server in "development" mode with npm run start:dev I don't experience this issue, the cache seem to kicks in properly and the open file count is not going up.