[0.13.11] Strange train behavior on slow collision

[dratone]

The trains, on a slow collision, exhibit some strange behaviour.

The trains start to "interweve" on each cargo wagon. Its difficult to explain, but i've made a video about it. Its available unlisted on https://www.youtube.com/watch?v=kuGoSVPExBw

The map was made on 0.13.6 and upgraded to 0.13.11 - but the tracks, signals and trains were all made in 0.13.11. After we found the bug I made a test setup to show highlight it.

Steps to reproduce:

Create 2 loops of track with an intersection.
Set the signals so they block each other, then remove the inner signal to let both trains drive.

See screenshots for a clearer picture. - Remove the signal blocking the train driving right to left to see the effect.

[Loewchen]

Duplicate of: viewtopic.php?f=41&t=29750