DP83825I: TX output contains excessive harmonics, fail the 10Base-Te compliance test.

Part Number: DP83825I

Dear support team.
What do you think could be causing the high levels of harmonics in the DP83825I TX output?

Due to significant harmonic components in the TX signal, the following 10Base-Te compliance test items either barely pass or fail:
 MAU Template
 JITTER with TPM
 TP_IDL Template without TPM
 JITTER without TPM
 Peak Differential Voltage
 Common Mode Output Voltage
Additionally, testing for "Harmonic Contents" cannot be performed.
I have attached the waveforms for each test and schematic.

Thank you.