This bug is orthogonal to one source of truth. It is a pure logic bug that could have existed in a standard system library for config files if such existed on U

This bug is orthogonal to one source of truth. It is a pure logic bug that could have existed in a standard system library for config files if such existed on Unix. And consider that consequences of such bug would be much worse if it was in a standard system library. At least here it is limited mostly to developers where machines are updated.