Which config caused the drag and drop issue

Hi @Nir_Reitman 
Utilizing the same steps tfilipiak used, you can remove the options in your config.pro in order to attempt to track down the option(s)
According to About Drag and Drop, only the option autoplace_single_component is specified which would place the dropped component into an active assembly or provide a dialog box with a choice to assemble, retrieve in new window, or cancel.

Mike