What caused all four windows in my locked 2013 Skoda Octavia to open overnight?

I left the windows of my locked 2013 Skoda Octavia closed and in the morning all four windows were half open. What could cause this to happen?
Either you sat on the key that has a 'global opening' function or moisture got into the locking and windows ECU inside the driver's door.
Answered by Honest John on

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