Another Rooftop glitch?

Happened to me yesterday on Conquest.

I took a break and just came back for a few rounds this evening and each map the enemy was camping roof tops.  This is the first I've noticed it as it appeared half the team was on roof tops.  It made it really hard to advance.

The same issue still arises on the Sobek city map. In breakthrough game mode it's just impossible to capture the second area as it's completely surrounded by buildings on the roofs of which the defending team is able to climb and place deploy beacons.

until then, the best way to get them up there is to get to the base of the building and then take out a drone, strap c4 on it and fly it right on their faces. the c4 make the battery drain much faster and when it is 0%, the drone detonates along with the c4 on it and you are likely to blow up some of them

They manage to put a out of bounds on the mountain that's dead center in the map on liberation peak. 

I just don't understand why they just won't do the same on rooftops on certain maps if no one is not supposed to be up there. This is frustrating when I want to have a fair gameplay without someone finding some way somewhere where it's difficult to kill them.

They love reinventing the wheel. On a map like Cairo it's very simple to prevent these kinds of exploits. You can just create a big box/plane that spans across the map, that's placed above a certain height. As soon as you're inside the box the Out of Bounds script is triggered and you need to leave within a few seconds or be killed in the process. In past Battlefield titles you had this, but for some unknown reason they didn't include it in Battlefield 6.