Thanks for your reply Alex.
According to my video, I would like say that
I don't always reproduce it but sometimes reproduce it in file uploading.
I don't think it depends on browsers and file types.
I found similar issue
https://github.com/orbeon/orbeon-forms/issues/4433
Following to this issue, it was fixed in version 2019.2.1.
But this version is not availabe in PE download
https://www.orbeon.com/download
However, I sometimes reproduce it in file uploading on 2019.2.2 PE locally
and demo
orbeon.