Sorry for the late reply and thanks for the report and fix.
I will try to find and reproduce why this happened in the first place (sections get out of order).
I can’t think of any way this would happen though. If you have have any leads, please let me know.
By the way, it would probably be better to add this OrderBy fix at the end of Validate method (in that same CutsceneGroup.cs class), so that it’s not called every time indeed.