In some conditions the world may render with gaps between chunks.

Steps to reproduce:
1. Create superflat world with preset minecraft:bedrock,64*minecraft:deepslate,5*minecraft:stone,5*minecraft:dirt,5*minecraft:gravel,90*minecraft:water,minecraft:ice,minecraft:water;minecraft:deep_ocean
2. Fly around in creative
3. You should notice visual glitches when crossing chunk borders.

Note: Increasing your render distance to lower your frame rate might make the issue more noticeable (because the frame containing the bug stays on screen longer)