Chevron knitting is weird. Especially when you are trying to get a straight horizontal finish.
Me being logical while binding off:
That’s not a straight edge. It’s diagonal!
Me admitting defeat and just doing what works:
Yes, that’s straight. Just ignore the WEIRD THINGS you have to do to make it so.
To get a straight vertical line you decrease one stitch at that side.
But if you want a straight horizontal line you have to bind off TWO stitches. At EACH end.
Knitting makes no sense sometimes.