Valves popular shooter has stood the test of time since its release in August 2012, going from strength to strength while other franchises have tried their best to knock it off its perch.
While the title may not be completely flawless, it remains a fan favorite and a hugely successful competitive esport title. Yet, that might be somewhat challenged by a new graphical problem that's allowing some players to see through surfaces, despite them not having any sort of exploit enabled.
