[MC-122788] Curved rails change direction when non-connected neighbouring rail is broken in some directions

To reproduce, build the setup shown in the attached screenshot and break the rail on the diamond block. Observe the curved rail change orientation.

I suspect this bug has the same cause as MC-122787.

Linked issues

relates to 1

MC-122787 Rails placed to the east or south of curved rails break existing connections Resolved

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Comments 2

Anton Morozov 2018-01-11T15:44:59Z

Also this (nearby rails being updated more aggressively than before) is most probably the cause of MC-122663 (terminal ascending rails now reverting to flat) which was closed as "as intended" and commented with "you can build in a previous version and then upgrade".

Curious if this is also as intended and our previous ability to edit tracks next to previously completed tracks was a bug all along.

Anton Morozov 2018-01-12T04:09:44Z

Uploaded a demo:
Editing rail in 1.12.2: https://giphy.com/gifs/minecraft-rail-l49JZXWMCqiT42OyI
Editing rail in 18w02a: https://giphy.com/gifs/minecraft-rail-snapshot-3o752ggfT4BmqXXAIM