Railroad in regional has an error

I’ll attach a few pictures that can explain better. As a timeline marker, this happened after the last anniversary update where the bridges were messed up. The railroads in regionals can not be deleted. It always leave a pigtail that take 1 square of space. For that 1 square, I can’t delete the railroad and it would not let me connect a road. I don’t who can help fix this. As reference, the picture with castle shows a normal railroad section.