the T18B bomb sight is bugged, the bomb drops much shorter than the bomb sight aim indicates
B18B same problem 600 kg mb m/50 bombs, the bomb sight is always further than the actual point of impact, the faster the aircraft the further off is the mark
I’m not entirely sure but i think that is on purpose, the faster the bombers fly the more inaccurate the sight is.
Though if you’re certain that something is wrong then you can bug report it here (just search a bit first so that you don’t report something that is already reported and known about): (Gaijin.net // Issues)
A guide on how to report bugs can be found here: ([Navigation] Technical Knowledge Base | War Thunder Wiki)