Invariant failed: Announcement node already mounted

[Mangatt]

Expected behavior

There should be no such warnings in the console.

Actual behavior

After HMR update, react-beautiful-dnd throws error that is catched by it's error boundary. Error is throwed on every update, no matter if updated Component is inside or outside DragDropContext.

What version of React are you using?

16.11.0

What version of react-beautiful-dnd are you running?

12.0.0

What browser are you using?

Google Chrome 78.0.3904.8

[alexreardon]

Hi there!

Thanks for raising this issue. Can you please create a standalone example on codesandbox.io using our boilerplate: https://codesandbox.io/s/k260nyxq9v

Without a standalone example, we will not be able to action this one

Cheers!

[Mangatt]

@alexreardon How can I emulate HMR problem on codesandbox.io?

[alexreardon]

Sorry, what does HMR stand for?

[alexreardon]

oh, hot module reload?

[alexreardon]

I can see why this could occur

[Mangatt]

Yes, hot module reloading.