Prompts to advance to the next Act need to be more clear

Not a bug, and there doesn't seem to be another real feedback thread about this. I am a new player. I just finished beat the final boss of Act 1, but didn't have inventory room for the drops. I opened my portal and went to go identify and sell everything. I accidently clicked on a dialog option from the Hooded One and with no warning or notice I was thrown into a cutscene that sent me into Act 2 with no way of recovering the boss items I just got. This is not okay. If you're going to have a dialogue option of all things progress you, there needs to be some sort of "are you sure" pop-up. Yes, I know I can go do the fight again, but I am still pretty ticked off

Agree about the prompt. However, if it has been less than the 8-15m instance timer you could click the waypoint and go back to act 1 town and return to your portal to the boss room.

I tried that it it was not there. That may be a bug, or I did something else that I didn't realize that caused it to close