Strange radar strobe behavior in RWS and TWS modes

[Pack Rat]

Both in RWS and TWS modes (but NOT in VS mode). When strobe reaches top side of the screen, it snaps to center. When strobe reaches bottom side - it snaps to top. Stops at left and right borders normally, though.

 

 

[E-TF[101] Breeze]

This is normal 

[Napillo]

If you move it up to the top, it bumps up the range, if you move it to the bottom, it decreases the range. This should not happen in VS mode, but it does and is annoying, it also shouldn't happen at the extremes (min/max) but it does and is annoying.