This happens to me weirdly in game and I couldn't find a moment when and how it happened but sometimes I am building something.... Clipping works perfectly... Then I go for a quest or something away from base and when I come back to finish the building, the pieces wouldn't clip and would show as tilted by maybe 10-15 degrees.
It happens anywhere in the world not only around base.
I solved it by logging out and logging back in, then it goes back to normal.
Not sure if I am doing something wrong or it's a bug. 💪