This issue is not big problem but still I think it could behave better. It is hard to describe what I mean and so I made this short video capture:
It is about range slider where I start to drag right slider to left until range is zero (for example like in video 21-21) then I keep mouse button down and move with mouse to the left and with mouse button still pressed I move back to the right again.
Then right slider should start to move to 21-22 and then 21-23 and so on but this is not happening. When I keep moving mouse to the right it later jumps to 21-26 and then 21-29 or something similar.
So trying to drag right slider too much to left visually makes nothing but it seems like inside RadSlider is something changing for some reason.
(It is same with left slider, I just used right as example.)