What is the logic in which ISF shaders respect iteration# ? Fractal (a built-in ISF) doesn't, Transparency (a built-in ISF) does, all Blurs (extended ISFs) do, many additional ISF do, many don't. Same for Iteration Frequencies. Other internals work and offsets placed modifying an iteration# still change the output but the iteration# itself doesn't (for those that don't work). Not all ISF shaders are suitable for iterating on but many are and are light enough to be repeated.
Picky iterator
Re: Picky iterator
Could be a bug, we'll investigate.