> ReactOS is original Open Source code, developed outside of Redmond.
Plus code from Wine, the same project that is used for running Windows programs on Linux distros and macOS, and the basis for Valve's Proton tuned for running Windows only games on these operating systems.
We can say that ReactOS even benefits from some Proton development, although indirectly.
ReactOS does not have any telemetry. ReactOS is original Open Source code, developed outside of Redmond.
It is not disappointing when bug in ReactOS is fixed. It is a reason to celebrate and be happy.