My device is having issues deploying Microsoft Defender for Business products

The MDB deployment is complete, the TDT feature originally enabled by Microsoft Defender is disabled, the MDB deployment is removed, and the TDT function of MD returns to normal.

The MDAV status before MDB is deployed, the TDT feature is enabled.

After the MDB deployment is complete, the TDT function status of the MDAV changes to N/A

Remove the MDB on the device, the TDT function of MDAV will be restored to the normal usable state.

Is this a bug?