Hi Anh Tran,
Were having trouble opening the "select file dialogbox" in Microsoft Edge. In the other browsers (FireFox, Chrome, Internet Explorer and Safari) it works just fine.
We can drag the files into the drop area, that works fine in Edge, the only thing is the dialog for selecting the files.
We don't receive any errors in the development logs.
We are using the metbox-fieldtype: file_upload
With kind regards,