Cannot open select panel from jest and react testing library

[DawnMD]

I'm trying to render a selection input where initially nothing will be selected and on the click of the input it will show all the available values.

Select is the Select from the package whereas SelectOption is Option. When rendered via react testing library and clicked on the input, the selection list is not generated but works flawlessly in the UI

Form library: Formik

[raDiesle]

same problem.

Actual problem is that all the time the popup container is not there at all in html, before and after open click.
getPopupContainer={(node): HTMLElement => { return node.parentNode; }}

e.g.
<div id="mypopup" />
without any classes attached

[raDiesle]

This helped me from #563:

await act(async () => {
await fireEvent.mouseDown(screen.getByRole('combobox'));
});