Ideal load system heating and cooling at the same time

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Hi! I just come across a strange situation that my ideal load system is supply heating and cooling at the same time. After check related questions in unmethours, I change variable output frequency to detailed, but the issue still exist. The magnitude of total heating and cooling energy are E+4 and E+0.

I checked with my cooling setpoint schedule, I set the cooling setpoint to 50 to turn off the cooling. So why the ideal load system still have a total heating energy? Whether this is due to the unbalanced heat transfer at that specific time point? Thank you so much!