When I flown SQ in J class window seat, you probably will get control at least 2 to 3 windows either on the 744 upper deck or the main deck, I also encountered many times either the window seat passenger in front of my row or behind my row will shut my windows off without asking my consent...?
Many occasion I don't want to argued with them directly since I don't know their background, they could be some VIPs, Singapore Government officials, SQ Solitarie PPS members, etc... so I have to talk to the cabin crew & let the crew to re-open my side of the window shield.