3.19 (specifically 3.19.1, Debian package 3.19.1-1~exp1) shows the same behavior as 4.0-rc5. With 3.16 (specifically 3.16.7-ckt7, Debian package 3.16.7-ckt7-1), instead of scattered blocky noise that doesn't dance around, I get pixel-level green noise over the whole image that changes every frame.
3.19 (specifically 3.19.1, Debian package 3.19.1-1~exp1) shows the same behavior as 4.0-rc5. With 3.16 (specifically 3.16.7-ckt7, Debian package 3.16.7-ckt7-1), instead of scattered blocky noise that doesn't dance around, I get pixel-level green noise over the whole image that changes every frame.