Cannot fully shutdown the board with 2.7b2 release image

Hello,

I was trying to build an custom image that is built on the newly released console-tdx-image.bb in the meta-toradex-demos. I added and enabled some of my own recipes and built my own console image. The flashing progress went pretty well but the issue I have now is that I cannot fully turn the board off using either the shutdown now or systemctl poweroff.

So at first I thought it was due to my custom image caused some issues. But when I downloaded Apalis-iMX6_LXDE-Image_2.7b2-20170410.tar.bz2 from here and flashed onto my board, I encountered the same issue: the board cannot be fully turned off: the LED1 on the board is on all the time even after issuing the shutdown command.

What is the cause to this problem?

Please have a look here.