Okay, it's not that setting after all. It's very strange and has something to do with the "Take System". I'm not sure
what exactly causes it but it's splitting items outside of, and not part of the Takes I'm working on. Also it's not
splitting in one place on the time line, it's splitting at the start of time selection as well as where markers and regions
are located within the time selection.
I'm going to keep working on this project and I might be able to narrow it down.