I updated two of my TX3 minis with:
LibreELEC-S905.arm-8.90.5.img.gz (only one TX3 mini, as the 2nd one was already autoupdated)
and now finally LCD works again without being 'scrambled'.
The problem is that they now both POWER OFF when they finish booting (few seconds after they get into LE, probably one of the services/autostart stuff).
What could be the problem that they POWER OFF because of updated/latest dtb?