Similar problem. Opened a creative snapshot world. Switched from creative to survival a few times to test the shulkers spawning feature—shulkers could be killed/de spawned normally. Increased the random tick speed to 1000 to watch amethyst crystals grow. Then doused myself with a splash potion of night vision and switched to spectator to look for amethyst geodes. When I found a geode cave there were 4 creepers and 3 skeletons just standing there. Still had the ‘breathing’ animation but couldn’t be punched and didn’t react to me when I switched to survival.
Similar problem. Opened a creative snapshot world. Switched from creative to survival a few times to test the shulkers spawning feature—shulkers could be killed/de spawned normally. Increased the random tick speed to 1000 to watch amethyst crystals grow. Then doused myself with a splash potion of night vision and switched to spectator to look for amethyst geodes. When I found a geode cave there were 4 creepers and 3 skeletons just standing there. Still had the ‘breathing’ animation but couldn’t be punched and didn’t react to me when I switched to survival.