SUMMARY
Speed effects get completely lost and could even mess up other effects (like transform etc..) when the clips are moved or adjusted in the timeline.

STEPS TO REPRODUCE
1. insert a video clip in the timeline
2. apply transform or any other effect and then apply speed (lets say put in slow motion for example at 50%...)
3. move or adjust the length and location of the clips in the time line (is good testing whit couple of clips in two different tracks)
4. the try playing and you will see the speed effect would be completely lost, and sometimes even affect the transform effect applied creating a sort of cut frame (not showing the whole image of the footage...)

OBSERVED RESULT:
as try to express above, the speed effect would be completely lost, and sometimes even affect the transform effect applied creating a sort of cut frame (not showing the whole image of the footage...)


SOFTWARE/OS VERSIONS
Windows: 18.08.2

Thanks a lot.