Am I the only one who did not spot this until today?
After nearly a fortnight of using FCP 12.3 I have only this morning realised that the default to auto-render has been switched off!
For me this is very welcome as I never liked it and frequently found myself forgetting to turn it off.
I always wondered why the default setting was "ON" but I suppose it's because Apple thinks it knows what we want better than we do.
Mac mini, macOS 26.2