Oh trust me I know what's in the 9.5u1 release notes. I helped put the wording together for the OES 2015 bullet point in the release notes.
What that's referring to is the ability to do any FLR activity at all on a volume with Trustee Index enabled. If you were to try FLR with 9.5 (before Update 1) against OES 2015 SP1 where that feature had been enabled, the Backup Browser window wouldn't even display the NSS volume. With the support, the NSS volume shows up.
But to what you've been mentioning, I did some testing again in my lab. Everything was done with 9.5u1 and OES 2015 SP1 with three different volumes (32-bit non-AD-enabled, 32-bit AD-enabled, 64-bit AD-enabled). I was surprised to see I could use the restore option in VBR to restore to the original location! This is new behavior from how it used to be. I will ask to get the documentation updated.https://helpcenter.veeam.com/docs/backup/vsphere/multios_restore_before_you_begin.html?ver=95
We need to remove the line stating "You also cannot restore files directly to the original location from NSS filesystems."
In my testing I restored individual files and entire folders. All worked. And using the OES client from a workstation, after I restored anything once I hit F5 to refresh my Windows Explorer window I saw the restored files/folders show up immediately. I'm not sure why you didn't see your restored data appear immediately so that may be worth troubleshooting.
At any rate, no need to send a movie as I definitely believe you.
Permissions still aren't restored, but since restore to original location is working, that's one step closer to possibly getting permissions restored someday. I'll see what I can dig up on exactly how we're copying the data back to the OES server and see if it would be possible to leverage xattr to eventually get permissions restored, too.