When the gamerule "doImmediateRespawn" is set to true, players do not experience the Wind Charged, "minecraft:oozing" or weaving effect, meaning that no slimes will spawn upon death. This is likely because slimes spawn after the death animation is complete, and if the gamerule is true, the animation is skipped. This behavior may also affect the "infested" effect, although testing is more challenging due to its lower probability of spawning silverfish at only 5%.