Bug. Spreadsheet and Part drag-drop madness

[DeepSOIC]

1. Open attached file

dragdrop-spreadsheet-bug.FCStd

(13.16 KiB) Downloaded 23 times

2. Drag-drop Spreadsheet into Part
-> Everything is moved into Part, except for Cube001.
expected behavior: only spreadsheet should end up in Part.

Also:
1. Open attached file.
2. Select everything but Part and Spreadsheet
3. Drag-drop the "everything" into Part
-> Spreadsheet is also moved into Part.
expected: spreadsheet stays outside of Part.

Similar thing happens if I then drag spreadsheet out of Part... It seems like spreadsheet is intricately attached to all these objects except Cube001. I can't get the spreadsheet outside of Part, which is what I would usually want.

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.13509 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 0258808ccb6ba3bd5ea9312f79cd023f1a8671b7
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: Russian/RussianFederation (ru_RU)

[DeepSOIC]

@ickby any ideas? How is drag-drop supposed to work? I.e., what objects are supposed to be automatically sucked in?
I also have this behavior with part-o-magic tool to move objects across containers, which means it has much wider impact than just drag-drop.

ping!

[DeepSOIC]

wrote issue #0003474