I'm not sure if anyone else has experienced this but I was able to recreate it twice. When building a stone bridge, the beginning section is always highlighted, even when it is fully built.
lapis folio
I'm not sure if anyone else has experienced this but I was able to recreate it twice. When building a stone bridge, the beginning section is always highlighted, even when it is fully built.
bleak rapids
A reload fixes this
dawn pulsar
This does not only happen with stone bridges. I also had this with wooden bridges.
AFAIR I also had this with another building, but cannot fully remember what it was 🤔