IIRC this driver update fixes it.
https://github.com/o...6794fb109874143
The issue you posted was fixed back in August after a lot of pestering Qviart to fix it.
EDIT: It was actually the update before that one, that fixed the skin issue.
It is not limited to Qviart, every HiSil box has the same issue with alphablending.
Qviart hasn't updated the BSP, in their words, "we send test drivers to OE-A so they can do the testing for us, we only update the BSP when drivers are stable".
And it isn't stable, in OE-A (I've tested it) it isn't fixed, it is worked around. Instead of seeing the UI build up like in OpenPLI, in ATV nothing happens at all for over a second, and then the completed UI is displayed. So the "fix" just holds FB updates until they are complete.