I've been playing on a new world in a Pocket Realm (Windows 10 Edition client) with my SO for a couple of nights now. On both long sessions, we've just been mainly setting up our base over ground, planting flowers, catching animals, planting crops.

Along the way, we chopped down some trees for our resources and re-planting the sapling.

Today (second night) I've been noticing that 99% of the saplings we replanted have grown! We've played for hours now, and most of the time just around our base, so we haven't ventured far enough for the saplings to have been chunk-unloaded. The farms we set up are also still in early stage growth, none of the wheat has matured! What gives?