I will let the pictures speak for themselves:
(http://i330.photobucket.com/albums/l405/skoleboss/simscr15_zpsa91fb3bd.png~original)
(http://i330.photobucket.com/albums/l405/skoleboss/simscr17_zps9f1c06ac.png~original)
(http://i330.photobucket.com/albums/l405/skoleboss/simscr19_zps71e75b4d.png~original)
Contrary to what should be expected, the train takes the most snaky route possible, instead of taking a straight line - which was possible. It has happened several times, I have uploaded a savegame where it should be reproducible. You might want to fast forward, but it should happen relatively often.
Savegame (https://docs.google.com/file/d/0BxL13clucqWlMDViRXFOZjBGeUU/edit?usp=sharing)
My version of Simutrans:
Simutrans-ex 11.4 r1104
Pak128-Britain-ex 0.9.0
(No answer here?) Does this still happen? In recent ST-standard revisions (using Pak64), I have noticed a similar, but less severe degradation of routing at choose signals compared to e.g. rev. 6729 (I think), which is, however, still newer than this bug report.
Ahh, I had missed this because it was in the pakset forum rather than the code forum. Can you reproduce these issues in 11.12? If so, I will move this to the simutrans-experimental development forum and investigate. Alternatively, if these issues are not unique to Experimental, this will need to be moved to the Standard bug reports forum.
Yes, still appearing. I played today with the same pak in a new game, and trains take some strange routes at complicated station entrances.
Simutrans 112.3 experimental 11.4 r1104
pak128.britain-ex 0.9.0
Ahh, you seem to be playing with a very old version of Simutrans-Experimental, 11.04. The current version is 11.15. Can you upgrade to the latest version and try again?
Oh, thanks! Didn't see the new version!
But still no improvement. Same save as in the original post, same position (594,317), same situation. Took me less than a minute fast forward to see the first occurrence...