This affects things like fences connecting to things. See attached screenshot.
Linked issues
relates to
Attachments
Comments

This affects things like fences connecting to things. See attached screenshot.
[Mod] redstonehelper
Erik Broes
Confirmed
structure, structure_block
Minecraft 17w50a
Minecraft 18w01a
Retrieved
Maybe structure integrity should be considered as well, in this case updating the sides would not be enough.