On my native Windows 7 x64 desktop (outdside any fence) I cannot put icons in the downmost row (next to the lower edge of the screen). They always snap back to one row above. Yet I can place a fence down there, so there is definitely enough pixels to host another row of icons.
The desktop option for "auto arrange Icons" and "Sort" are both off, only "arrange in grid" is on. If I switch off the grid arrange I do can move icons down but this is not an option.
What can I do?