AP One AX Lite starts without 2.4GHz radio

I recently added an AP One AX Lite to my setup. I have a MAX BR1 Pro 5G that acts as the controller. So far twice when I powered up the AP only the 5GHz band was available.

Power-cycling the AP brought the 2.4Ghz band back but at the rate this is happening this is a problem, especially in a vehicle where power is cut an restored all the time.

The first time this happened the AP was on firmware 2.9.4 and I was using the 12VDC input, since then I updated to 3.9.4 and switched to PoE but it just happened again.

Has anyone else experienced this? Is there anything I should do?