After being able to run UVW randomizer only with default cinema bitmap shaders I stared to create new material from scratch with them instead corona bitmaps. I have noticed that reflections vary in different render times. I have made a short video. Reflections change after I restart Interactive viewport.
feature=youtu.be
this behaviour does not exist with corona bitmaps, which at least in my case are not functional with UVW randomizer :(
I have uploaded the scene to dropbox Interactive Viewport bug.zip
Both bitmap shaders final render identically. Only in interactive viewport , when changing filter values along with default cinema bitmap shader the results are incorrect.
Daniel