Is this new?

[Emulgator]

Thanks to you both, will further investigate here.
My footage so far was from FX-1, the FX-1 CCD sensor is not full HD,
upscaling is used in the camera already,
so probably this source won't exhibit the artifacts you noticed...

[Rusty]

Back On Topic!

Phew! I've been hijacked! Now back to the original issue.

I found the culprit... under Settings >Application Settings >Playback ><untick>Continue playback when trimming clip.

After spending a day with this setting ticked I may just stay there. One mouse wheel move is somehow easier than "A". Maybe this will actually make my work faster.