get_current_account and get_space_usage api returns inconsistent tag

Hi， but why if I upload some stuff to dropbox, only the "used" changed, but the "allocation:used" doesn't change. If it's a member of team, when it uploads, the team used should change. Moreover, If the user belongs to a team, the "allocation:used" should be greater than "used". We also wonder that why "allocation:used" doesn't update in real time when we upload multiple files, only "used" updates.

{
    "used": 2702286001658, // changed
    "allocation": {
        ".tag": "team",
        "used": 2525035157914, // not changed
        "allocated": 91259465105408,
        "user_within_team_space_allocated": 0,
        "user_within_team_space_limit_type": {
            ".tag": "off"
        },
        "user_within_team_space_used_cached": 2621858815064
    }
}