In the version directly after flowing water had a displacement effect implemented, flowing lava had one added as well. However, it seems that even without that displacement effect (whose value is currently unknown) the generated lava effect appears different - whether the code that generates it is also fundamentally different, if it just uses a different initial seed or if they're the same after all but the 32x32 resolution stitching makes it appear otherwise is unknown.
As the flowing lava texture very likely used RNG for generation, it may vary between sessions and getting a loopable animation may not be possible.
In the version directly after flowing water had a displacement effect implemented, flowing lava had one added as well. However, it seems that even without that displacement effect (whose value is currently unknown) the generated lava effect appears different - whether the code that generates it is also fundamentally different, if it just uses a different initial seed or if they're the same after all but the 32x32 resolution stitching makes it appear otherwise is unknown.
As the flowing lava texture very likely used RNG for generation, it may vary between sessions and getting a loopable animation may not be possible.