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So I figured out a way to fix this triangle issue. If you printer Creality CR-10S instead of 10S Pro you don't get the triangle. You get the initial line on the left side and then a line to the skirt. It will not interfere with your print now.
Attached is the starting sequence before the skirt is added. It lays down the side line and then completes the triangle before placing the skirt. If I turn off skirt it does the same triangle and then goes right to the print.
triangle.MOV.zip
I am getting the triangle every time as well and it interferes with first layer. Did you find out how to prevent the triangle from happening? It does this on every print.