Texture rotates 90° when extruding Edge

Hello everyone,

I am using a Prism pb_Object to visualise a simple roof. The roof surface is therefore covered with a roof tile texture/material.
I am further able to edit the roofs width at runtime, using the TranslateVertices() method from the current ProBuilder API (v. 3.0.8, Unity v. 2018.1), and everything is working great.
But, my problem is:
While increasing the width of the roof (thus extruding its edges) the roof tile texture will at some point rotate around 90°. Making the roof narrower again lets the texture rotate back again.
I attached two screenshots to make things more clear:
OK:

Not OK:


Does anyone know how I can prevent this? Looks like some kind of automated alignment thingy...
The same effect happens also in Editor Mode.

Thank you very much in advance!
Christian

 

Alright, thank you very much for the info! Waiting eagerly for a fix