Drag and drop from Downloads
I use FileZilla a lot to transfer files to my server. I quite often download a file in my browser then drag and drop it into FileZilla. When using firefox it worked directly from the downloads panel, but in Vivaldi I have to right click and open file location then drag and drop it. It seems like an unnecessary step that I didn't have to do before. This is probably a highly requested feature and this may be a duplicate post. But I would have thought this would be in the browser by now if it was.
Try drag&drop from Vivaldi'S internal tab; to be opened with