*Snip* - Disengage was available, but it took an action so you could not use that and then attack again. BUUUT, you could still just run behind them and attack for a flank. BG3 permits you to move while engaged with mulitple targets to jump behind them and not having to risk an attack of opportunity in order to get a flank on your primary target.
See that right there shows you do not understand 5e at all. There is no "flanking" in Solasta. There is "engaged" which allows the rogue to proc their sneak attack if the enemy is already engaged by someone else. However, in that case the Rogue would be able to use their bonus action to disengage, reposition AND attack. Sorry it become more and more apparent that you are criticising a system you have no understanding of.
