Steps to reproduce:
1. upload a video (at least one hour long) and mark it for cutting
2. open it up in the video editor
3. cut a segment near the end of the track
3a. click and move the starting point of the last segment so that the times are correctly shown in the list of segments
4. try to edit the milliseconds of the second to last segment
Actual Results: the endtime of the second to last segment gets reset to its original value.
Expected Results: The value you input should be the new endtime of the segement