I think you are right. I just noticed the odd angle.
I use to work on a software named Architrion and it let you start a wall at one height and finish at another and I thought maybe AC 11 would let you do that.
AC 7 - 27
iMac 27"
Mac OS Sonoma 14.0
3.1 GHz 6-Core Intel Core
32 GB 2667 MHz DDR4
Radeon Pro 575X 4 GB