Elastichsearch full text search takes the created_by_id into account

When I currently use the text field for the search in the frontend & I insert a user id (just an integer), it will find all datasets that include the user id in the created_by_id field.

The search should not consider this field for the text query.

As example here was to create multiple platforms, all with the same short name (p) and serial numbers that count up (1, 2, 3, ...7).

When I then just search for 1, I expected to see only the platform with the serial number 1, but I got all of them. I expect the user id (1) to be the problem.