I have an Atera Strada Evo 3, and the tailgate on a T5 clears without, with 1, 2 or 3 bikes no problem.
The same bike rack on a T6 clears the tailgate with 3 bikes, 2 bikes if they are put on the 2nd and 3rd place, 2 bikes on the 1st and 2nd place might clear with just pulling the bikes outwards, without bikes, you have to either tilt the bar, or pull the bar to the outside.
Most other bike racks just can't clear the tailgate unless you modify the bike rack. (I said most, not all)