Missing internal transactions in xDai API?

Hi, I tried to fetch internal transactions via blockscout xDai API, however I found something weird.

In this API call: , I tried to list all internal transactions of “0x6e5249d4371c61bbd7cb62f0d79bce6aa18569662f4a6b5fdc30f4262c8599e5”. But, you can notice that there’s no internal transaction with index 11! The transaction index number jump to 12 after index 10, which is very weird.

Then I tried to get internal transactions via my own xDai node to compare the result, which works perfectly and includes the 11th internal transaction. I’m wondering is it a bug of xDai API or I missed something?