When you put a piston under a line of rails and you give to the piston a 1-tick pulse the rail (only the normal rails) at the center break and the ones next to them react as the were with a block in front of them, and they dont break until you cause a block update on them, but every minecart can ride them without problem and going up and down

I discovered this my mistake

I put a piston under some rails trying to make them broke to make a sorting sistem

Steps to Reproduce:
1. make a line of rails an put a piston facing up under one of them
2. give a 1-tick pulse to the piston
3. there you have it

Now. for some reason this only affects normal rails, activator/detector/powered ones will break the rail that is in the piston and the one at the west or at the north of it, the rest of them will be fine

thanks for reading!!

: D