Train jumps on minimap - Minor graphical glitch

[Codemaster]

Hello,

I've found a very minor graphical problem.

If you run vertically up and down (north-south) then all horizontal train jump up and down one pixel on the track line on the minimap.
The same happens east-west with vertical trains.

See pink squared in train in screenshot. If you run up and down now it will move. If you only do one "step" it will stay _misalligned_ with the track.

train_minimap_glitch.png (1.35 MiB) Viewed 844 times

Save from my other bugreport if required:
download/file.php?id=27193

Thank you.