A Bizarre Glitch on the Remade Train Map

Counter Strike: Global Offensives de_train map recently underwent some significant changes, This glitch allowed players to reach a rooftop previously inaccessible by players, Giving the player a very significant advantage. The glitch has been patched recently and a sign was added to the area the glitch was previously possible in, Reading (Translated from Russian in-game text) "ON BIRD, NO TREAD"