Google Keep is a popular note taking app used across IOS, Andriod and the web.
Some Google Keep users notice issues with repeating numbered lists after updates. When adding a new item to a numbered list, the item above adds extra numbers.
The duplicating list issue appears to only affect the Google Keep app on Android. The issue is correlated to Android 12 updates on Samsung devices including Galaxy S21, S20, and Note 20.
Google admits there is a problem and says they are investigating. There is no clear fix at this time.