he's the best guy to ask, who knows it could even be a bug that nobody has found before, if it is and he can fix he generally sends out a beta version for you to test
1.mp4
2.mp4
3.mp4
I load them into the Cutter List to be saved in the order of 1,2,3 but it writes the video as 1,3,2.
I try to group it together, and it groups it as 3,1-2.