Video "autoplays" previous second when clicking around graph.

[AdamNgaTaonga]

Hi

When clicking points in graph of analysed v210 .mov, the video monitor jumps back and autoplays about a previous second then stops at the selected point of graph. Is this expected behaviour? QCTools didn't used to do this back in Vers 0.9. I find it disconcerting.

This also happens when stepping through frames with arrow keys.

I'm on vers 1.2.1 QCTools OSX 10.15.7 Catalina Late 2015 retina 4K intel i7 imac