Symlinks no longer being followed

It appears that a recent BluOS version has stopped following soft links on a NAS; alternatively it is a change with Synology.  Either way I'm hoping someone else has experienced this and has a solution.  

The background:

I have a Bluesound Vault and Pulse Mini.  I am using a Synology NAS DS920+ as a network share.  My music library is larger than what I want in Bluesound, and I use soft links to make that happen.  

The soft links are something like this (where the root of the shared folder to BlueSound is ".../BlueSoundMusicLibrary":

ln -s "/volume1/media/audio/MainMusicLibrary/The Beatles/1968 The Beatles (2018 Remix)" "/volume1/media/audio/BlueSoundMusicLibrary/The Beatles/1968 The Beatles (2018 Remix)"

I don't use the BlueSound daily (or even monthly), but recently found that the music wouldn't play.  I reindexed and found that the BlueSound is only finding (and playing) music that is available from the shared location if it the paths do not contain soft links (e.g., if I copy the White Album's files into a folder in the share, it works fine).

It is possible that the Synology firmware is the culprit, I am able to navigate through soft links from Windows File Explorer (SMB), but when logging into the Synology using ssh, I cannot navigate the links unless I am the root.  I believe that has always been the case.

So something changed: either BluOS firmware or Synology firmware or default settings (I haven't changed any settings for over a year).

Anyone else experienced this or have ideas?

Thanks in advance,
Robert