Incorrect diff generated for some object nodes

[Quantum64]

I only have a preliminary understanding of this issue. Reporting now because it is causing havoc in our recently launched production system. I am planning to thoroughly investigate and potentially PR a fix in the coming days.

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.flipkart.zjsonpatch.JsonDiff;

import java.util.HashMap;
import java.util.Map;

public class PatchTest {
    private static final ObjectMapper mapper = new ObjectMapper();

    public static void main(String[] args) throws Exception {
        Map<Integer, String> first = new HashMap<>();
        first.put(1, "foo");
        first.put(33, "bar");

        Map<Integer, String> second = new HashMap<>();
        second.put(2, "foo");
        second.put(3, "bar");

        JsonNode source = mapper.convertValue(first, JsonNode.class);
        JsonNode target = mapper.convertValue(second, JsonNode.class);
        JsonNode diff = JsonDiff.asJson(source, target);

        System.out.println(mapper.writeValueAsString(source));
        System.out.println(mapper.writeValueAsString(target));
        System.out.println(mapper.writeValueAsString(diff));
    }
}

Incorrectly outputs

{"1":"foo","33":"bar"}
{"2":"foo","3":"bar"}
[{"op":"move","from":"/1","path":"/3"},{"op":"move","from":"/33","path":"/3"}]

Notice two values being moved to key 3.

Possible temporary workaround: Disable move operations.

Edit: Seems to be related specifically to integer map keys.
2nd edit: Seems to be related to integer map keys being misinterpreted as array indices.