Actually there were some problems (very long procedures I think would be one example). Other then that compatibility shines.
To save others the same DDG search I did -> Delphi is a Pascal language IDE that compiles to native Windows binaries. Apparently there is this thing called Lazarus that is a free version of it?
It's part of the value proposition: the language and libraries are planned for forward compatibility and stability for use ten years in the future, as well as now.