There's a black square when I render alpha channel that casts onto another alpha channel in cycles:
Notice how the leaves that is over the 'earth' has black squares behind them.
It only happens because the 'earth' has a layer of 'clouds.png'
When I tried to render the leaves onto solid objects, the black squares dissapeared. Any ideas on this?
Note that this worked fine on Eevee render: because it has the settings to change blend mode in the material panel.