Ok, so I created a new project with the same imported assets and had exactly the same problem. The new project did not have version control.
However, with some testing I did find the culprit. Under the Standalone Player Options, the Display Resolution Dialog dropdown must show Disabled. So as long as I don't want to enable that for players then I should be good to go. It would be nice to learn why that happens and get it resolved. Thanks for your help, I greatly appreciate it.