I am trying to page the results of a terms aggregation using a bucket sort aggregation.

I am using the query below to sort the buckets by the sum of the scores in order to list the categories by order of relevance. I then want to page the results and to do that i am using a bucket sort aggregation.

The problem is that the when I use "from":1 the aggregation truncates 2 results, when i use from:2 it truncates 4 results. So apparently it is at least predictable, but I don't understand why it is truncating exactly double the results I am specifying.

I am using a work around to get my results:

for 0-10 i use from:0 size:10:

for 11-20 I use from:5 size 15

fro 21-30 I user from:10 size 20

But i am not comfortable with the fact that it is truncating an unexpected value.

Thanks in advance for any help you could give.

```
POST _search?
{
"size": 0,
"query": {
"bool": {
"should": [
{
"match": {
"bodyText": "deep learning"
}
},
{
"match": {
"bodyText": "intelligence"
}
}
],
"boost": 1
}
},
"aggs": {
"top-connections": {
"terms": {
"field": "data.category.keyword",
"order": {
"sum_score": "desc"
},
"size": 200
},
"aggs": {
"sum_score": {
"sum": {
"script": "_score"
}
},
"sales_bucket_sort": {
"bucket_sort": {
"sort": [
{
"sum_score": {
"order": "desc"
}
}
],
"size": 5,
"from":1
}
}
}
}
}
}
```