If I enter a number into a cell and copy it, pressing enter doesn't move cursor down. (It pastes the content and erases the clipboard, as noted in Bug 90949.) Enter only moves the cursor down once you move to a new cell.
Mac OS X 10.10.3
Thank you for submitting the bug. The bug has previously been reported, so this bug will be added as a duplicate of it. You will automatically be CCed to updates made to the other bug.
*** This bug has been marked as a duplicate of bug 58929 ***