I think that column would be perfectly visible from that mirror angle. But the reflected space between columns is the one outside the camera, at left. That’s all and that was the @Arkiras ‘mistake’.
Anyway, he was not pointing a geometry reflection issue, but a lightmass one. And if geo was wrongly reflected, that would worth the report too. So why not to use any conflictive scene, even if it can show even more buggy sides?