Have a bitlocker locked volume connected to the system, then I run:
sudo lsblk -o name,mountpoint,label,partlabel,size
The PARTLABEL is displayed always, but the LABEL isn't, unless the volume is unlocked with the key/password and then mounted.
Now my request for lsblk: be able to read LABEL for locked volumes also, using third party tools which can provide the information:
sudo dislocker-find | xargs sudo dislocker-metadata -V
Also read PARTLABEL
blkid doesn't detect it either.
It's good enough to use github for feature requests.
I have just committed basic bitlocker detection to upstream libblkid.