[Therion] Splays appearing when not selected

[Martin Sluka]

> 1. 2. 2021 v 20:10, Benedikt Hallinger <beni at hallinger.org>:
> 
> Probably it's caused by artifacts, see screenshot.
> Thats an old bug, and caused by some scraps extending far beyond a known station (walls are marked unsurveyed).

I had the same artifact when I created two overlapped scraps of the same part of passage referenced by the same stations.

Martin