V9.4.0 Error: Cannot have two HTML5 backends at the same time.

[NexxLuo]

Describe the bug

Although the new version has been fixed this issue in #1422 .
But I still found has this problem .Maybe ignore some situation?
Look like this https://nexxluo.github.io/tablex/doc-draggable-index.
I try to click the menu more time, it throw this problem.

There is a gif image below, maybe it is slow, wait patiently...

• OS: windows 10
• Browser : chrome 77.0
• Version : 9.4.0

[Enigma10]

I am also having same issue.

[NexxLuo]

I solved it with this way.

<DndProvider backend={HTML5Backend} context={window}></DndProvider>

[NexxLuo]

I am also having same issue.

I solved it with using window context.

[WizardWang94]

Thanks! Why it can works? Are there any documents about this?

我遇到了相同的问题，用这个方法解决了，但是为什么它能生效呢？有相关文档吗？