Gnome-a-palooza gone after resumig crashed Explore

Platform, device version and operating system:
iPad Air 4th gen. iPad OS 15.3.1. GOW v 6.2
Screenshot or image:

What you were expecting to happen, and what actually happened:
I started a Gnome-a-Palooza, played Explore 12 in Sword’s Edge. Gamed crashed at the end of battle 1. I expected the GaP timer to retain the number of minutes even though it took 5 mins to relaunch the game. When game loaded there was 12 minutes showing on the timer. I went back into Sword’s Edge explore and clicked ‘no’ to end the explore run. I expected to see gnomes in the opposing team but there wasn’t any. I exited the battle to find the GaP countdown had disappeared.

How often does this happen? When did it begin happening?
*Steps to make it happen again