Strange artefacts appeared in my project

When building my airport i suddenly noticed this strange artefact. At first I thought it was graphics from a taxiway but I checked everything. Now I cant get rid of it. Anyone noticed similar?
Skärmbild_20230209_235845

Hi there,
The best place to ask this question is SDK, so I moved your topic there.
If you aren’t able to solve it here, you are also welcome to visit https://devsupport.flightsimulator.com/.

I am not a scenery designer, but since a couple of days exactly this type of artifacts is appearing in many of my payware airports (don‘t know if all airports, but certainly in all I used lately).

These artifacts appear and disappear randomly - its almost as if my MSFS installation caught a virus!

Well I found the culprit in my project. For som reason it was the colored centerlines that caused it. When two of the lines was not connected as they should the white areas appeared. And when I connected them the white stuff dissappeared like magic.