I hesitate to post this since the source files don't make for a very clean test case. However, it does lead to a fully reproducible Fusion 360 crash, at least on Mac.
To reproduce: Open the file "Gravity Spool Holder (Garth)", not to be confused with "Gravity Spool Holder (Fanta)". Select the top level component/document. You'll see a single operation in the timeline that's marked as yellow, near the end. (You'll have to scroll the timeline.) Select and delete that operation to cause the crash.
Context: I was originally deriving components called "Nut" and "Center pin" from "Gravity Spool Holder (Fanta)", but I wanted to substitute my own design, which I created in a separate file ("Trefoil nut and center pin"). I then edited the original derive operation to remove the original components and added a derive operation for the replacements. My intention was to work forward in the timeline and fix failures in chronological order. That worked fine, except that I can't delete this one dangling reference to the old Nut component.
I tried re-editing the original derive operation and bringing the Nut back in, but this doesn't work. The reimported version has a separate identity from the original import, so the Nut-cloning operation doesn't recognize the reimport as being relevant.
Fusion
