[2.0.20] Elevated rail builder fails in a particular merging scenario

[Pat86]

The following building action fails when attempting to join the two tracks together:

obraz.png (1.26 MiB) Viewed 164 times

Despite being valid and buildable manually:

obraz.png (1.03 MiB) Viewed 164 times

Here's the bluepring string of the initial state:

Code: Select all

0eNqdlu1ugyAUhu+F35jwqeKtLM1iW9KRKBrEZk3jvQ/bbK4rdR5+GRWe5wUOhCvaN6PunbEeVVdkDp0dUPV2RYM52bqZv9m61ahCrjZN5uq2RxNGxh71J6rohF+0/NWITTuMtPXGG31n314u73Zs99oFCv7uqRt9rr0+ZoMPkNOHz24sjPpuCN07O1sCMpOhzyU8KSUhAzoapw/3/2KO9EfAngWH0Z3D4zaoOiIQ5StBHhFw+AgEh4xAJAhAUyThAq4ggjxBUEAERYJAQgRlggC0yAo/7LVh7PvO+RhWQLCUJAQHFQ9N2MEMVD2UJRhA5UM5/JBgAnJIULF1fcVSl+SRK2NcuZ58v3b6EKU2JM+3JmcUlLyAJ6cKlLyEG/hikFOMqRJSy3UmI/Dq+zkeiSJRJoUzKf+HyfDzfWAtWhnH8E2YJc2MCbcI43Ub+ixXFozO2g33AsuZEkpJUXBGeJjlL3II4zo=

[boskid]

This looks like a duplicate of 121758 that was fixed in 2.0.24.