Comment # 2 on bug 1192739 from Thomas Blume

I cannot confirm that:

-->
# rpm -q udisks2
udisks2-2.9.2-1.6.x86_64
#
# fdisk -l /dev/vda
Disk /dev/vda: 20 GiB, 21474836480 bytes, 41943040 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 466FE8C6-8D55-4F84-A00C-2D81A3300E14

Device        Start      End  Sectors  Size Type
/dev/vda1      2048  1050623  1048576  512M EFI System
/dev/vda2   1050624 39323647 38273024 18.3G Linux filesystem
/dev/vda3  39323648 41943006  2619359  1.2G Linux swap
--<

-->
# udisksctl info --block-device /dev/vda1
/org/freedesktop/UDisks2/block_devices/vda1:
  org.freedesktop.UDisks2.Block:
    Configuration:              [('fstab', {'fsname': <b'UUID=5AA0-F4B9'>,
'dir': <b'/boot/efi'>, 'type': <b'vfat'>, 'opts': <b'utf8'>, 'freq': <0>,
'passno': <2>})]
    CryptoBackingDevice:        '/'
    Device:                     /dev/vda1
    DeviceNumber:               64769
    Drive:                      '/org/freedesktop/UDisks2/drives/VirtIO_Disk'
    HintAuto:                   false
    HintIconName:               
    HintIgnore:                 true
    HintName:                   
    HintPartitionable:          true
    HintSymbolicIconName:       
    HintSystem:                 true
    Id:                         
    IdLabel:                    
    IdType:                     vfat
    IdUUID:                     5AA0-F4B9
    IdUsage:                    filesystem
    IdVersion:                  FAT32
    MDRaid:                     '/'
    MDRaidMember:               '/'
    PreferredDevice:            /dev/vda1
    ReadOnly:                   false
    Size:                       536870912
    Symlinks:                  
/dev/disk/by-partuuid/9cbdf785-76ee-4669-b7f7-2be03889aa8a
                                /dev/disk/by-path/pci-0000:04:00.0-part1
                                /dev/disk/by-path/virtio-pci-0000:04:00.0-part1
                                /dev/disk/by-uuid/5AA0-F4B9
    UserspaceMountOptions:      
  org.freedesktop.UDisks2.Filesystem:
    MountPoints:        /boot/efi
    Size:               0
  org.freedesktop.UDisks2.Partition:
    Flags:              0
    IsContained:        false
    IsContainer:        false
    Name:               
    Number:             1
    Offset:             1048576
    Size:               536870912
    Table:              '/org/freedesktop/UDisks2/block_devices/vda'
    Type:               c12a7328-f81f-11d2-ba4b-00a0c93ec93b
    UUID:               9cbdf785-76ee-4669-b7f7-2be03889aa8a
--<

Maybe something went wrong during your tumbleweed installation?