C-FIND missing SOP Instance UID when specify to return sq vr tag

Hi, I'm testing against Orthanc 1.0 and have the latest dicom-web plugin installed, I issued C-FIND request at Retrieve Level of Image and Study Root, and I specify to add an extra return key wit VR of SQ, used the dcmqr tool from dcm4che2 toolkit.

bin/dcmqr -I MKORTHANC@127.0.0.1:4242 -r 00082112

12:57:43,888 INFO - Query Response #1 for Query Request #17/19:
(0008,0016) UI #28 [1.2.840.10008.5.1.4.1.1.1.2] SOP Class UID
(0008,0052) CS #6 [IMAGE] Query/Retrieve Level
(0008,2112) SQ #-1 [1 item] Source Image Sequence

ITEM #1 @62:
(0008,1150) UI #30 [1.2.840.10008.5.1.4.1.1.1.2.1] Referenced SOP Class UID
(0008,1155) UI #44 [2.25.210908664276072243671473616531937062130] Referenced SOP Instance UID
(0028,135A) CS #4 [YES] Spatial Locations Preserved
(0040,A170) SQ #-1 [1 item] Purpose of Reference Code Sequence

ITEM #1 @184:
(0008,0100) SH #6 [121322] Code Value
(0008,0102) SH #4 [DCM] Coding Scheme Designator
(0008,0104) LO #44 [Source Image for image processing operation] Code Meaning

(0020,000D) UI #44 [2.25.42120767257553128630402356537409110677] Study Instance UID
(0020,000E) UI #44 [2.25.337119679357110901133380893893769175512] Series Instance UID
(0020,0013) IS #2 [4] Instance Number

You can see that SOPInstanceUID is missing, if I get rid of this extra key, that field will be there.

bin/dcmqr -I MKORTHANC@127.0.0.1:4242

13:05:02,988 INFO - Query Response #1 for Query Request #17/19:
(0008,0016) UI #28 [1.2.840.10008.5.1.4.1.1.1.2] SOP Class UID
(0008,0018) UI #44 [2.25.138654117806636569220000903240457076826] SOP Instance UID
(0008,0052) CS #6 [IMAGE] Query/Retrieve Level
(0020,000D) UI #44 [2.25.42120767257553128630402356537409110677] Study Instance UID
(0020,000E) UI #44 [2.25.337119679357110901133380893893769175512] Series Instance UID
(0020,0013) IS #2 [4] Instance Number

Thanks!