I can confirm this fix didn't work for me either, just like Datadog recently said.
I'm using Ubuntu Hardy "final" for AMD64, a Nvidia 6600 board, with Nvidia drivers from the Ubuntu repository. Moreover, I changed the window decoration to Emerald, and I'm still experiencing the same "wonky-ness" or 0% opacity (full transparency), so I think the responsible could be the Nvidia drivers.
I can confirm this fix didn't work for me either, just like Datadog recently said.
I'm using Ubuntu Hardy "final" for AMD64, a Nvidia 6600 board, with Nvidia drivers from the Ubuntu repository. Moreover, I changed the window decoration to Emerald, and I'm still experiencing the same "wonky-ness" or 0% opacity (full transparency), so I think the responsible could be the Nvidia drivers.