Is it a breaking change that modifying the access modifier of a public property?

Question

If I change the access modifier of the setter of a public property from private to public, is that causes any breaking change in the other assemblies that refer it?

Answer 1

This depends on how strict you want to be about "breaking change".

One definition is: does it break the build or execution of the referring code.

Another is, can the other code determine that you made the change.

By the first definition, this is not a breaking change. By the second definition, it is a breaking change.