This has happened to me many times. I don't see how this is a lag problem when somebody is completely still one moment and within a split-second they're 5k away and before I have a chance to blink a second time, they're gone. It's a relatively new issue for me, this never used to happen say a year ago. If it's lag-induced then I can only assume that a ship would be drifting or pinging back-and-forth before whooshing away at a ridiculous speed. If the other ship was sat still and then had a connection problem, surely a command would not be received by the server so they shouldn't really cruise off all of a sudden in the manner which they do. I also don't see how it can be a lag problem on my end when the ping command clearly shows me as having nil problems at that time.
As for the trade lanes, that's certainly an old bug. There is clearly a discrepancy somewhere but this is not new. I have to say though, advising people to not hit the lanes unless something comes is pointless given that stray gunfire and mines from the NPCs can disable them.