Finder Drag to Tab Issue
I think since I updated to Mojave I have trouble drag & dropping files from one finder tab to an other. When I try it I get a stop-sign-icon below the mouse. Only happens if the folder I want to copy it to is on a connected disk (in this case a Mac Mini) with folders in the same computer it still works. Dragging it on the same directory works if I open it in a separate window instead of dropping it on the tabs-bar.
Below a screenshot of the issue (mouse was not visible on screenshot so I drew it about the way it was)
Any idea why this is?
iMac 27", macOS 10.14