Animation Sequences in Sequencer Set to Frame 0 When Transform Curve is Moved

-When a curve of a transform track is edited animation tracks set themselves back to start at frame 0.
-Tested with scale to avoid interference with location
-sequencer is not docked

1. Download attached project
2. Open sequence
3. Scrub through sequence and see only the scale of the character has been keyed
4. Select one or a couple of the keys
5. Open the sequencer curve editor
6. Open dropdown menu < show all curves
7. Slightly move one of the curves
8. Exit the curve editor back to the regular sequence layout
9. See the animation tracks have set back to start at frame zero and sometimes change the length of the animation

Expected: The animation tracks stay in the same location on the timeline and the length of the animation remains the same even when an added transform track curve has been altered

Result: Animation tracks set back to start at frame 0 and are sometimes lengthened when a curve in the transform track is edited