Before we get started:
Yes, I have seen the post.
Yes, I have tried the HarvesterMemoryValue=0 (which according to the INI file comments, is not
valid as it says 1 - 99. Either way, it doesn't matter because that value seems to have no effect.)
No, I am not playing only on maps with water around the edges. I am not foregoing portions of the game because the mod is broken.

It seems the issue lies with the Rampastring QOL mod integrated with this one. The problem is that author has moved on and is no longer updating their mod. So it will very likely never be fixed. I think the work you have done is great, Bast, but this is really breaking things. Can you remove or allow us to disable this portion of the mod?

In the meantime, I am going to keep playing with INI file settings to see if one turns off whatever AI changes were made to the harvester in Rampastring's mod.