So I just decided to do a bit more sleuthing, and it turns out this is a known issue that may not presently have a fix: http://answers.microsoft.com/en-us/insi

So I just decided to do a bit more sleuthing, and it turns out this is a known issue that may not presently have a fix: http://answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_personal/how-to-disable-sticky-corners-in-windows-10/cb077f2d-920f-4f51-8e61-28578ab31ec9?auth=1 http://answers.microsoft.com/en-us/insider/forum/insider_win... Bummer.