THIEF!! LoL, j/k!
But yes, I too, have noticed this parallel dimension, in fact, I have actually witnessed its occurence! I was building my 1/48 scale Bradley, right? Well, the metal rod connectiong the left drive wheel to the right one, needed to be insert in the kit, right? Well, I set it down, IN THE CENTER OF MY DESK, left my hobby room, came back a minute later, and IT WAS GONE! I saw the last little bit of get devoured by the parallel dimension, just out of the corner of my eye! The sight of that dimension, IT WAS BEAUTIFUL! Like, an emptiness beyond all emptiness, a peaceful, serene, nothing...
I wasn't elated for long, though! The portal sealed right back up the moment I tried to reach through it and retrieve my drive wheel rod! So, I ended up making my rod out of a straightened paper clip, cut to size. My rod has not come back, and is probably floating in all that nothingness that is... THE BEERMODEL TriANKLE...