You're right about the .rar being deleted, I was actually mistakenly referring to the [.sub].rar inside the original rar (which automatically gets extracted also, leaving a .sub, but newsbin doesn't delete that secondary rar)... I took a couple screenshots to help out... Click on the thumbnails to enlarge them, and I can PM you a non-obfuscated version if that'll make it easier lol.
Here's what I get using the normal download (double click the Search result or right click > download)...
it's just
XXXXXXX.par2 and
XXXXXXX.sfv, it doesn't download
XXXXXXX.rar.
Here's what I get when I use the "Download - Bypass Filters" option.
...
Ahh, finally figured it out... I thought that I had seen these sub files listed as spam a few days ago, but I couldn't find it again when I first posted last night (my bad)...I now see it halfway up the failed files list, and once I deleted the entry it shows back up every time I try to normally download it. And I see a dozen sub.rar files on the list, all marked "Download failed: File is spam or not really a file." All of them were legit files from a legit source. Going through the spam filters, it's failing due to the generic "Fail Spam Files" option.