Just pushed a fix for your issue. I was able to replicate your condition and it's not there anymore after the fix so I assume we're good to go. Let me know if not. Pushing a small update to the Android app on Zapstore here in a minute.
Discussion
That did the trick, and signet-ui is starting now!
I've updated tickets with further issues around signet-ui.
Unfortunately I still can't get the Android app working after updating either. Still that same issue. I tried wiping storage + cache to be sure.