Shouldn't really have anything to do with Wine, but thanks for the extra variable just in case
One of the first things I can think of is some kind of memory corruption, but I'd think we'd get random crashes and other strange behavior if that were the case, and we're not. (I'm also prone to thinking memory corruption is behind any inexplicable bug where the associated code and data look fine, and I'm usually wrong
)
I guess I'll have to leave this in the Bugs board until we get any more evidence for it. Obviously it happened to you, so it must be possible under some circumstance...
(Also, in future runs take a look at that and other Point Defense-type parts if you encounter them to see if it persists, or was a one-time thing. Thanks!)