My dad flew F-80s in the Korean War. The F-80 had a nasty characteristic. If you flew it too fast, it would pitch up, and the sudden aerodynamic forces would rip the wings off. Unfortunately, the engine was more than powerful enough to do this in level flight, so the pilot had to be keenly aware of this at all times.

(The solution was swept wings, exemplified by its successor, the F-86.)