The balance_chart_data endpoint is unpredictably not serving data

[sgerodes]

Endpoint: GET /ver1/accounts/{account_id}/balance_chart_data

Firing this request on my paper account
...balance_chart_data?date_from=2022-06-23&date_to=2022-06-26
returns one entry
[
{
"date": 1656201600, // this corresponds to June 26, 2022
"usd": 12588657.72,
"btc": 587.721416,
"btc_deposit_amount": 0.0,
"usd_deposit_amount": 0.0
}
]

balance_chart_data?date_from=2022-06-19&date_to=2022-06-26
[
{
"date": 1655596800, // this corresponds to June 19, 2022
"usd": 13396968.91,
"btc": 724.00707,
"btc_deposit_amount": 0.0,
"usd_deposit_amount": 0.0
},
{
"date": 1655856000, // this corresponds to June 22, 2022
"usd": 12895379.22,
"btc": 637.22643,
"btc_deposit_amount": 0.0,
"usd_deposit_amount": 0.0
},
{
"date": 1656201600, // this corresponds to June 26, 2022
"usd": 12588657.72,
"btc": 587.721416,
"btc_deposit_amount": 0.0,
"usd_deposit_amount": 0.0
}
]

The endpoint is ignoring days in between