[0.11.19][slpwnd] Train signal in blueprint block self.

[Altren]

When I'm trying to place blueprint with train signal already placed signals are blocking my blueprint. This bug appeared only after 0.11.18 or 19, previously I was able to do this.
On screenshots I'm trying to place blueprint right on top of it's last use:

train signal blueprint.png (1.01 MiB) Viewed 2789 times

train signal blueprint 2.png (586.75 KiB) Viewed 2789 times

[slpwnd]

Thanks for the report. This will be fixed in 0.11.20.