get_address_info method not including unconfirmed unspent outputs

[canuplsnot]

Here's my issue:

I use the get_address_info method to select the unspent outputs that I want to include in an outgoing transaction.
When I try sending several transactions within a short period, they begin to fail due to insufficient output values.
This I believe is due to the fact that change outputs (which are being forwarded back to the sender address) are still unconfirmed from previous transactions and are not being included in subsequent calls via get_address_info.
Even when I set the confirmations flag to 0 (which I notice is also the default value) they are not being included.
However when I use a different API provider, the issue is not present.
Furthermore, when I wait for unconfirmed transactions to confirm, there are no issues with gathering sufficient outputs.

Has anyone encountered similar?

[masilaxarxfa]