New
#551
What if you actually position the windows vs. using Windows split screen to position them? I don't know that the split screen is seen as a window position vs. a temporary Windows screen function.
Even with the old Windows that "correctly" remembered windows positions, I don't think they'd be remembered if you shut down from a split screen mode. They'd open up again in their last individually remembered position. (Possibly reset to the default because it was in a split screen mode when shut down.)