@Sebastian-Roth
Ok, we just updated to version 1.5.6.5 and we are still having the same issue as in this post. This happens for any image, I am going to include information for two of our most used images.
Here is the first image we use it is a Windows 10 Enterprise 1809:

d1.partitions file
label: gpt
label-id: 066202D1-4FDA-44C2-A0A0-3C26A816B87E
device: /dev/nvme0n1
unit: sectors
first-lba: 34
last-lba: 500118158
/dev/nvme0n1p1 : start= 2048, size= 1021952, type=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC, uuid=3366A936-7B65-43E1-AFDF-9DE4F8FE13A7, name="Basic data partition", attrs="RequiredPartition GUID:63"
/dev/nvme0n1p2 : start= 1024000, size= 204800, type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, uuid=0DBFD8B3-44AC-4600-926D-FDFB469EFF2A, name="EFI system partition", attrs="GUID:63"
/dev/nvme0n1p3 : start= 1228800, size= 32768, type=E3C9E316-0B5C-4DB8-817D-F92DF00215AE, uuid=BC00D195-83B5-4B15-BFF8-DDCEC9B3ADFF, name="Microsoft reserved partition", attrs="GUID:63"
/dev/nvme0n1p4 : start= 1261568, size= 498855936, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=890554EA-E1AB-4D7F-8C9D-7F8C83FA2A62, name="Basic data partition"
d1.minimum.partitions file
label: gpt
label-id: 066202D1-4FDA-44C2-A0A0-3C26A816B87E
device: /dev/nvme0n1
unit: sectors
first-lba: 34
last-lba: 500118158
/dev/nvme0n1p1 : start= 2048, size= 1021952, type=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC, uuid=3366A936-7B65-43E1-AFDF-9DE4F8FE13A7, name="Basic data partition", attrs="RequiredPartition GUID:63"
/dev/nvme0n1p2 : start= 1024000, size= 204800, type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, uuid=0DBFD8B3-44AC-4600-926D-FDFB469EFF2A, name="EFI system partition", attrs="GUID:63"
/dev/nvme0n1p3 : start= 1228800, size= 32768, type=E3C9E316-0B5C-4DB8-817D-F92DF00215AE, uuid=BC00D195-83B5-4B15-BFF8-DDCEC9B3ADFF, name="Microsoft reserved partition", attrs="GUID:63"
/dev/nvme0n1p4 : start= 1261568, size= 79997904, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=890554EA-E1AB-4D7F-8C9D-7F8C83FA2A62, name="Basic data partition"
d1.fixed_size_partitions
:2:3:1
The other image that we are primarily using that it is also happening on is a Windows 10 Professional 1809 build.

d1.partitions file
label: gpt
label-id: 066202D1-4FDA-44C2-A0A0-3C26A816B87E
device: /dev/nvme0n1
unit: sectors
first-lba: 34
last-lba: 250069646
/dev/nvme0n1p1 : start= 2048, size= 1021952, type=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC, uuid=13FC5702-27F9-49D6-8A69-F39933A23D1D, name="Basic data partition", attrs="RequiredPartition GUID:63"
/dev/nvme0n1p2 : start= 1024000, size= 204800, type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, uuid=12D97EEC-C05D-4AB2-85FC-E279C488B16C, name="EFI system partition", attrs="GUID:63"
/dev/nvme0n1p3 : start= 1228800, size= 32768, type=E3C9E316-0B5C-4DB8-817D-F92DF00215AE, uuid=7DEE0FD7-4583-417C-9FCE-58C0396BD356, name="Microsoft reserved partition", attrs="GUID:63"
/dev/nvme0n1p4 : start= 1261568, size= 248807936, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=CB038B33-4E54-441D-80A5-6F8614224912, name="Basic data partition"
d1.minimum.partitions file
label: gpt
label-id: 066202D1-4FDA-44C2-A0A0-3C26A816B87E
device: /dev/nvme0n1
unit: sectors
first-lba: 34
last-lba: 250069646
/dev/nvme0n1p1 : start= 2048, size= 1021952, type=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC, uuid=13FC5702-27F9-49D6-8A69-F39933A23D1D, name="Basic data partition", attrs="RequiredPartition GUID:63"
/dev/nvme0n1p2 : start= 1024000, size= 204800, type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, uuid=12D97EEC-C05D-4AB2-85FC-E279C488B16C, name="EFI system partition", attrs="GUID:63"
/dev/nvme0n1p3 : start= 1228800, size= 32768, type=E3C9E316-0B5C-4DB8-817D-F92DF00215AE, uuid=7DEE0FD7-4583-417C-9FCE-58C0396BD356, name="Microsoft reserved partition", attrs="GUID:63"
/dev/nvme0n1p4 : start= 1261568, size= 248807936, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=CB038B33-4E54-441D-80A5-6F8614224912, name="Basic data partition"
d1.fixed_size_partitions file
:2:3:1
Let me know if you need anything else with this. I figured I would try updating to the latest version before anything else. Everything seems to be imaging fine, except for this hit or miss issue.