https://bugs.kde.org/show_bug.cgi?id=363558

            Bug ID: 363558
           Summary: git master: incorrect undo after automatic resize of a
                    transition
           Product: kdenlive
           Version: unspecified
          Platform: Compiled Sources
               URL: https://youtu.be/fK6Chktb6Us
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: User Interface
          Assignee: j...@kdenlive.org
          Reporter: wegwerf-1-...@gmx.de

When moving a clip with an "automatic" transition less than the length of the
transition, the transition automatically gets resized. When undoing the clip
move and thus the transition resize, the keyframes of the transition do not get
properly restored. Instead, some keyframes may be lost and others may be
positioned wrongly.

Please see https://youtu.be/fK6Chktb6Us for a short demonstration.

You may use the attached project for a quick start.

Reproducible: Always

Steps to Reproduce:
1. Create new project.
2. Create title clip and drag it to timeline, onto topmost track.
3. Create color clip and drag it to timeline, onto the track below the title
clip.
4. Add a composite or affine transition to the title (if not already done so).
5. Set keyframes, in particular one keyframe 12f before the end, and one
keyframe at the end of the transition.
6. Make sure the transition is set to "automatic".
7. Move title clip 2~3 seconds in timeline using the mouse, but less than its
length so that the transition gets resized.
8. Undo

Actual Results:  
The final keyframe of the transition is lost. The next-to-last keyframe is in a
wrong position.

Expected Results:  
Final keyframe properly restored. Next-to-last Keyframe also properly restored.

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