I started working on trying to narrow this down for you today. I believe I have managed to already rule out a sizable chunk of possible changelists, but I still have a ways to go.
This is really awesome, many thanks in advance!
Hi ,
Unfortunately I have a bit of bad news related to this. This issue is somewhat unusual in that it only appears in the 4.13 branch of the Engine. Not only that, it appears in the entire history of the 4.13 branch, from when the branch was first created to the last change that went into that branch.
The progress that I thought I had been making yesterday ended up being a result of me contaminating my test case. I had looked at the very beginning of the 4.14 branch and saw an error when building the Automation Tool program there. Working from that, I was eliminating portions of the 4.14 branch where the Automation Tool built successfully until I realized today that my initial test in 4.14 had been flawed. When I retested the very beginning of the 4.14 branch, the issue did not appear there.
I then checked the Main branch, and could find no indication of this issue ever existing there either. After that I focused on the 4.13 branch to try to find out where the issue originated, and it appeared in the very first changelist when the branch was created. That is strange in that there were no code changes that took place at that point, it was just a new branch being created, and the issue did not occur where the branch was being created from.
So unfortunately I am currently stumped with regards to where this issue came from, and why it only occurs in 4.13.
Okay, thanks for your work so far, please update if you have any news on that topic.