My switch to the 5.10 kernel with update 2020-12-30

It does in this case, see: lsblk --fs

NAME                       FSTYPE      FSVER    LABEL        UUID                                   FSAVAIL FSUSE% MOUNTPOINT
sda                        crypto_LUKS 2        WD40EZRZ-00W 2d2d4f8f-d805-48f1-8ebb-dcf6ff0f77bd                  
└─luks2                    LVM2_member LVM2 001              CNMSPt-srmi-XlU3-4tSf-CuQY-jMCA-sPyhuy                
  ├─Linux-Home             ext4        1.0                   c594117e-bd1e-468c-a6b8-e3ef43c1bea5      5.5G    38% /home
  ├─Linux-ManjaroArchitect ext4        1.0                   da54bb75-506a-4659-996c-f9bfcf94b2b7     80.7G    13% /
  └─Linux-SteamGameLib     ext4        1.0      SteamGameLib c757ec1d-b406-45ff-974f-24b607697362                  
sdb                        btrfs                Backups      7f9302f6-0006-480e-84a5-771c9e185581                  
sdc                                                                                                                
└─sdc1                     vfat        FAT32    ESP          A694-9741                               765.5M    25% /efi
sdd                                                                                                                
sr0                                                                                                                
zram0                                                                                                              [SWAP]

Edit:

Ok i correct myself: Seems the UUID used was indeed correct one, sorry…
But anyway, this shows how hard it is to distinguish using UUID, while it makes more sense (and easier) to use mapper names when encryption is used…