A real-life puzzle. I'm mystified

I am not sure that this (or anywhere) is the right place to ask. I’m just puzzled about some things that happened today. Genuinely happened – this is not a set-up for an ordinary puzzle.

This morning 5 Jan 2021, I awoke and got out of bed earlier than usual. I’d been awakened by some quiet scraping noises. I discovered that my bedroom door was firmly closed – strange because I always leave it open at night. The only other occupant of my flat is my small dog and she was securely in her ‘bedroom’ – a crate with a blanket over the top. Shutting my door takes effort because of the draught excluder around the frame. The door opens inward.

My inward opening front door was closed and had a laundry basket right next to it, to remind me to do the washing. To get in from the landing would have required pushing the basket out of the way and somehow replacing it flush against the door again on the way out.

I live on the 8th floor and my bedroom window has a catch on the inside. There is a sheer drop all the way to the ground. I have a balcony off the living room. The door to this always has a luggage elastic strap to prevent it blowing open too quickly. The strap was hanging loose. In theory, the balcony could be reached by an expert climber, however it is completely enclosed by bird-netting, and that is still intact. The only other way in would be via the kitchen window which also has a sheer drop and during the cold weather is kept shut with a catch.

My landing light was on when I emerged from my bedroom – unusual because I routinely switch all the lights off via Alexa when I go to sleep.

P.S. When I took my laundry down to the shared facility in the building, my dog’s winter coat was in the laundry. I wasn’t even aware that it had been missing.

Question

What was going on?

I have come up with a few solutions, e.g.

1. I have finally gone mad.

2. I sleep-walked. I’ve never done this in my entire life and I’m now retired.

3. Something supernatural is going on. I don’t believe in ghosts or poltergeists.

Is there any non-magical way all this can have happened? Please ask for further details if necessary.

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Notes

This is not some elaborate formulation of a theoretical situation. I am not kidding – this happened today.

Nothing of value appears to be missing.