2-session DVD: Windows show old content & Linux show new?

Hello. Using xorriso to burn DVD the second time (without -multi, a.k.a. 
there is no 3rd session). The image is created using genisoimage -C (but 
not using -M, a.k.a. the old and new content are not related).

The burnt DVD - with Linux (gnome), new content is mounted. With Windows 
XP, old content is mounted and show.

So my question is:

 1. Did I do anything wrong? Or does Windows/Linux handle session
    display differently?
 2. If I can reliably reproduce this issue, wouldn't that be a way to
    prepare different content for Windows/Linux? e.g. for a Game CD,
    have windows installer and Linux installer on the same CD but
    different track/session.

Thanks in advance!

$ dvd+rw-mediainfo /dev/sr0
INQUIRY:                [TSSTcorp][CDDVDW TS-L632N ][0503]
GET [CURRENT] CONFIGURATION:
  Mounted Media:         11h, DVD-R Sequential
  Media ID:               TYG02
  Current Write Speed:   8.0x1385=11080KB/s
  Write Speed #0:        8.0x1385=11080KB/s
  Write Speed #1:        6.0x1385=8310KB/s
  Write Speed #2:        4.0x1385=5540KB/s
  Write Speed #3:        3.0x1385=4155KB/s
  Write Speed #4:        3.0x1385=4155KB/s
  Write Speed #5:        3.0x1385=4155KB/s
  Write Speed #6:        3.0x1385=4155KB/s
  Write Speed #7:        3.0x1385=4155KB/s
  Write Speed #8:        3.0x1385=4155KB/s
GET [CURRENT] PERFORMANCE:
  Write Performance:     8.0x1385=11080KB/s@[0 -> 2298496]
  Speed Descriptor#0:    08/2297887 [email protected]=11080KB/s [email protected]=11080KB/s
  Speed Descriptor#1:    08/2297887 [email protected]=11080KB/s [email protected]=8310KB/s
  Speed Descriptor#2:    08/2297887 [email protected]=11080KB/s [email protected]=5540KB/s
  Speed Descriptor#3:    00/2297887 [email protected]=11080KB/s [email protected]=4155KB/s
READ DVD STRUCTURE[#10h]:
  Media Book Type:       00h, DVD-ROM book [revision 0]
  Legacy lead-out at:    2298496*2KB=4707319808
READ DVD STRUCTURE[#0h]:
  Media Book Type:       25h, DVD-R book [revision 5]
  Last border-out at:    2045*2KB=4188160
READ DISC INFORMATION:
  Disc status:           complete
  Number of Sessions:    2
  State of Last Session: complete
  Number of Tracks:      2
READ TRACK INFORMATION[#1]:
  Track State:           complete incremental
  Track Start Address:   0*2KB
  Free Blocks:           0*2KB
  Track Size:            1029200*2KB
  Last Recorded Address: 1029193*2KB
READ TRACK INFORMATION[#2]:
  Track State:           complete incremental
  Track Start Address:   1067104*2KB
  Free Blocks:           0*2KB
  Track Size:            1161376*2KB
  Last Recorded Address: 2228479*2KB
FABRICATED TOC:
  Track#1  :             14@0
  Track#2  :             14@1067104
  Track#AA :             17@2228480
  Multi-session Info:    #2@1067104
READ CAPACITY:          2228480*2048=4563927040


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