Latest Snapshot freezes after playing for a while

When venturing through the Minecraft World in Snapshot 18w50a, the world seems to freeze and allow the player to do nothing but walk around the frozen mobs. This issue is reproducible by playing Minecraft on macOS Mojave with Snapshot 18w50a selected. All you need to do is play for a while and all of the world seems to freeze. Other than this, there seems to not be a way to simply reproduce this issue, yet it concurs often.