Lava has a greenish colour to it and appears like it is dark despite emitting light , ie: the light which it emits does now make the lava look bright . Overall it looks like sewage from the gutter.
And also lava acts weird with water at the surface, one the obsidian it forms with the water gets destroyed , it does not react with that water or flow any further.
The screenshots given shows the colour of the lava outside, the view of lava while inside it , and a view from under the surface of water showing the reluctance of the lava to flow into or react with the water below it.

I hope this bug will be fix soon

Sincerely,

Persivefire