RxJS: fromEvent(ref.current, 'anyEvent') works while in the "fast refresh", breaks afterward

[Noriller]

Bug report

Describe the bug

I have this ref that I'm trying to make into an Observable with RxJS:

const input = useRef();

const observableTry = fromEvent(
input.current, //this input already have a handle that sets the new state
'change',
).pipe(tap(console.log));

Then simply I'm trying to subscribe to it:
useEffect(() => { observableTry.subscribe() })

After a 'fast refresh' it usually works. After a reload it start giving errors.
After an error, a 'fast refresh' keeps on giving errors and I have to do a reload again.

Not able to reproduce anymore, but a while ago the reload wasn't only giving errors, but "breaking" (stopping) the whole "next dev" script. I'm already use a "predev" script that rimraf the '.next' folder since I've had a few problems with persisting errors before.

My structure until now is basically the "create next app" and from the index page I call my "app" component that have a "input component" that have this logic.

To Reproduce

Create a observable from a reference (ex: useRef) and try to subscribe to it.

Expected behavior

In this case, any change to the value of the input should be logged to the console.

Screenshots

System information

• OS: Windows 10
• Version of Next.js: 9.5.5
• Version of Node.js: 12.19.0

Additional context

I believe this to be some weird side effect related to Next compiler with RxJS and not from React/RxJS alone.