When you extract an archive file with Extract button (will open an extract dialog and need to click ok), if this file happens to be a small one, nothing will be shown to notify whether the process is ended (maybe the decompression dialog is shown, but it is closed instantly).
Like BandiZip, even if the decompression is complete, the dialog is still here to let you know the decompression is complete and you can close the decompression dialog and the main window simultaneously with the close button of the main window.
When you extract an archive file with Extract button (will open an extract dialog and need to click ok), if this file happens to be a small one, nothing will be shown to notify whether the process is ended (maybe the decompression dialog is shown, but it is closed instantly).
Like BandiZip, even if the decompression is complete, the dialog is still here to let you know the decompression is complete and you can close the decompression dialog and the main window simultaneously with the close button of the main window.