[0.13.6] [Martin] Train stops at a yellow signal, and doesn't restart

[TheUnknown007]

I found this bug, and I caught it early enough to still have a savefile before it happens.

There is nothing in particular you need to do in order to reproduce it, just wait about 60 seconds (autosave2)

Stuff that happens:
__(save "_bug_train_stopped_before" starts here)
__There are 6 trains: 1 circuit train, a fuel (coal) train, 2 iron trains, 1 copper ore train (all four from the east) and a copper ore train (from the south / west)
__First the circuit train goes to the science station (north west)
__Fuel train shoots across the junction without stopping, how irresponsible.
__Then the first iron train goes to the station in the north.
__The copper ore train sees an opportunity and grabs it: it goes to the east.
__The last iron train goes to the station.
__The copper train simply gives up when it arrives at the junction.

Info:
__This save was started in 0.12.?? (one of the later ones, somewhere in February/March) and gradually upgraded to 0.14.03 (ie. with pretty much every update except 0.14.0)
__The junction was originally built in 0.12.??, and was last changed in 0.14.01 or 0.14.02 (.02 I think) when I added the branch to the north west for the science.
__Bug is fully reproducible: it always happens if you don't mess with the rail network.
__If you add a rail before the train reserves the path (before the signals turn yellow) the bug still happens, if you add a rail after that the train will continue.
__While trying to test the conditions under which this bug happens (see 'adding rails' above), the game gave an error while I was trying to add a curved rail (see viewtopic.php?f=7&t=32111).
____Since this error only happens just before this bug occurs, I think they are correlated.

EDIT: updated to 0.14.03, still happens.

[HanziQ]

Fixed in the next version.