Decimal problem after upgrade from 4.6.1 to 5.4.3

Im using a json_extract command on an SQL table that contains a desciption and a value like this:

Before that worked just fine to get out 13,829
Now i am getting an error that this is not a numeric value.

I suspect there will be no reply to this also.
I fixed this by adding a *1 behind the query, then it suddenly became a number again.