How mature is Flutter Web?

Recently i got interested in learning Flutter, to be specific Flutter Web. In the past i've done web development using JavaScript both for front-end and back-end, but mainly for the front-end using libraries like ReactJS and VueJS ..etc

While these technologies are mature and production ready, i want to know based on your experience with flutter web how was it ? and how quickly is Flutter web improving? did you ran into some annoying bugs and issues? ..Basicaly how mature Flutter web really is, is it production ready?