I have multiple partitions; three of them are EXT4 and have a Linux system installed on them; two of them are NTFS and one of them has Windows 7 installed.
The second NTFS partition is almost half of the entire drive and is the only one that is not hosting an OS. It is a sort of deposit where I store text, image and multimedia files accessible from all installed OS-es and where most copying & pasting takes place. Only on this one an odd thing happens (and only in elementary OS): when I drag & drop selected files onto a folder (same directory level), the files are copied (like copy-paste) instead of being moved (like cut-paste).
On all the other partitions (ntfs and ext4), drag+drop=move.
(With the right mouse drag&drop opens the dialog that asks what to do, and then move works.)
I have tested this in both Freya and Loki.
What can be the cause? How could I investigate this farther?
UPDATE after testing other file managers:
This also happens in Thunar - therefore not
This doesn't happen in PCManFM