color sampler: update value on frame change

[Former user]

I am working on temporal noise reduction in VapourSynth, checking my results in VapourSynth-Editor.

For this, it would be useful to be able to rest my mouse cursor on a pixel, with the color sampler tool displaying the pixel values, and then use the arrow keys to shuttle between filtered frames, to see how the pixel values change.

Currently, the color sampler seems to only update it's displayed values on mouse move, but not on frame change with the arrow keys on the keyboard.

I would like to propose to have the color sampler tool update its displayed values on frame change as well.