I usually do 3x3 with 2 bots on my team and 3 bots on the enemy team just for practice (I'm new to DotA so I haven't played a lot of ranked games so I don't ruin their games, I'm going to practice 5x5 when I'm more skilled) and what I notice some times is that they don't divide when laning the most optimal way. What happens most times is 2 bots going top, 1 bot going bottom and no bot going mid. Is this a bug of some sort or supports always accompany carries even on this situation?