Problem with custom fields duplicating numbers

https://preview.redd.it/812u97ror4ad1.png?width=1496&format=png&auto=webp&s=443eceacc0fbbcf44ddeef5cafdb1d90dde7d32f

Has anyone had this problem and managed to resolve it somehow?

Suddenly my numeric fields started to duplicate entries so when I press the number 1, 11 appears and so on, with the exception of 0.

 

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