So I usually don't have any problems docking, but recently I've experienced a problem twice that doesn't make any sense to me. I'll get close to the target, then as I approach I line up retrograde (navball is in "Target" mode, confirmed over and over) and burn to decrease relative velocity. Relative velocity drops to zero, and the target flies away at a speed that must be over 100 m/s. I bring the nose around, point directly at the target and burn like crazy to catch up, then again turn to retrograde and burn to slow . . . and the target flies away again. Back and forth, back and forth, I get relative velocity to 0 and the target is definitely not stopped in place relative to my ship. I've tried "control from here" from various points on the ship and tried unsetting the target and setting it again. Nothing seems to work. Any ideas?