Unknown to you, one of the envelopes contains a explosive that is electronically triggered by motion. When you walk back inside, the bomb detonates, turning you into several barely recognizable red pieces. I use the restroom.
This happens to me from time to time too. The last time it happened was after I tried to open a craft with missing parts and then edited and launched a different craft. Unfortunately, I don't have the logs as it happened a couple of weeks ago . ALT-F4ing then starting the game is the only fix I can think of.
I tried to do it once, but I woke up from trying so hard . I stopped wanting to do so after most of the dreams I had happened exactly in the future. It's hard to explain, but I just don't want to upset this natural mechanism and risk something.