This makes the game more harder, the mob attack could be fixed by adding “horizontal_reach” with a certain value for the mobs that use “melee_box_attack” which could be adjusted to match their hitboxes.
I've actually noticed that especially Baby Zombies (including Baby Drowneds, Baby Piglins and Zombified Baby Piglins) have a much larger attack range unlike their adult variants, making them much harder to defeat... Still affected in version 1.20.51 in Bedrock, even without addons.
Affects 1.21.124