I had a tester with VS 2015 run through the steps I failed with, and they were unable to repro. JamesF was able to repro the issue on VS 2017.
JamesF pointed out that this does not occur is you choose to rebuild your project instead of building it when you encounter [Link Removed].
and change the 64.f to -64.f
and change the float value from 100.0f to 1000.0f. Save the file.
Compiling fails with Linker errors.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-44303 in the post.