iPad, OS 13.4.1
What you were expecting to happen, and what actually happened:
When the screen on my iPad shuts off while I’m playing the new delve event, the game restarts and the delve is reset. It doesn’t save my progress. Even if I’m not in the middle of a battle. I fought 2 battles, took a phone call, screen was off, went back into the game and the delve started over. So I lost my progress and wasted a sigil.
How often does this happen? When did it begin happening?
It happens every time my screen shuts off and it just started happening after the update this week.
Steps to make it happen again
Start a delve, play a few rooms, let your screen shut off, turn it back on, tap the game icon, go back to the delve event and it will be reset to the first level. And sigil count goes down by one.