Older aircraft don't always react as they should
Had and know of several occurrences especially in turbulence.
Doing a clean stall in a Beech baron had it flick inverted with ailerons and rudder virtually centred. Similarly mountain flying in a grob twin Astir doing figure of eights at 200ft agl. Colleague doing high fly in a trident 1 and when the stick push went off the nose just hovered for several seconds.