Signals can be made illegal by placing down tracks

[Teraka]

Placing the rail

Signal now illegal

As seen in the screenshots, tracks can be placed in such a way that existing legal signals become illegal placements.
While not technically a bug, this is a weird edge case that can trip up new players and doesn't really need to exist. Either curved tracks should be prevented from being placed too close to signals, or signals should work on the edge of curved tracks.

[Rseding91]

Thanks for the report however we don't intend on changing this.