Repro:
1. Tap Zoom to bring up number pad
2. Enter 100 at a speed the average user would type (not unnaturally fast)

Result:
After typing the 1, it auto changes the number to 3.14% (nice number choice btw :). But this then makes it so that the next two zeros you press just make the number 3.1400%.

One workaround is to type super fast and it doesn’t trigger the 3.14 change in time to break it. Maybe just increase this delay to fix the UX.