Mine hasn't changed, the car is still staying on for one to two hours a day and wasting more energy than it used to. Clearly Tesla changed something during one of the updates a few weeks ago to cause this change in behaviour, as until the change it would only turn on for maybe 10 to 15 minutes a day with the car sat, not being used:
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Think youselft lucky those online periods are 1 to 2 hours a day, as opposed to around 12 hours per day!