Drag-and-drop of message switches to destination folder

Hi, Since recently, when I drag-and-drop an email from my inbox to a subfolder, the destination folder is automatically selected as the active folder. That is very frustrating behaviour. Also it seems to me that, when dragging-and-dropping not fast enough, I seem not to be moving the selected message, but instead I have a lot of chance of moving the destination folder or so. Very weird, and certainly not the way it used to work. Has something changed recently, and is there an option to keep using the previous settings please? Thanks, Bart