OS Windows 10 64bit
CPU Ryzen 7 2700x 8 core 4.3 Ghz
GPU Nvidia 1080ti
Worked: 2.79b and previous versions
Short description of error
The small window that displays the motion tracker has an option to display what the algorithm sees with the options R,G,B, In previous version when selection any of the RGB options the window would immediately show what the algorithm sees but that is no longer the case, now the window does not update unless the marker is selected once again even when said marker was already selected thus creating a problem because now every time the uses wants to see the R,G,B options the marker has to be clicked adding unnecessary clicks.
Previous versions use to be, click R the algorithm would show immediately,
2.8 the user clicks R and algorithm will not display unless the user licks the marker again.
Exact steps for others to reproduce the error
Open motion tracking.
Load video file
Create a marker
Activate 'Display what the marker sees in the preview
Click R or G or B to compare what the algorithm sees, realize that nothing happens
User has to to click the marker again every time R or G or B is selected.