The popup window seems to require mouse input to close, which should not be the case in a game jam dedicated to a handheld that notably was not mouse-driven.
The digging was. I couldn't tell if I was gathering resources, just digging through harder rocks, or what was happening. Then suddenly I was back at the top, and the popup window was back, this time with a couple icons that were misaligned due to viewport chicanery (detailed below)
The viewport did not appreciate opening fullscreen on my dual-monitor setup, stretching some of the UI but not others, absolutely pulling it out of the proper aspect ratio. I mean, I didn't appreciate it opening fullscreeen either since it wanted to open across both screens, putting the center right in the cutoff between them.