My apologies, I was looking at the wrong sketch last night. Indeed your sketch breaks for me as well. It appears to relate to the bendable legs on the led and is likely a bug. While the wire to the cathode of the led says it is connected, for purposes of routing that isn’t correct. If I delete the black wire and connect the cathode of the led directly to the breadboard it appears to work correctly. As does having a second led connected directly to the breadboard like this. Moving the second led up so its cathode doesn’t connect causes the routing error. Yet the rats nest in schematic is showing as correct and will complete routing even when breadboard will not
Sketch_fixed .fzz (3.7 KB)
This sketch is the working version, If you drag the right hand led up so it isn’t connected to the breadboard you will get the 1 more net to route message. A fix is to connect everything to the breadboard that appears to work correctly.
Peter