Linux actually does this on purpose, and has for some time. The NTFS driver was kind of scary for a long time (not sure if it still is) - read/write support was

Linux actually does this on purpose, and has for some time. The NTFS driver was kind of scary for a long time (not sure if it still is) - read/write support was beta quality at best. So, the developers of the driver made Linux mark every NTFS volume as dirty, once it was mounted read/write. Then, when you booted into Windows, it would see it as a dirty volume, and do a file system consistency check on it - which is what the Linux driver was aiming for.