@MojangSupport The Switch version of Minecraft is nigh-on unplayable. The autosave function (which happens way too frequently) causes chunks to fail to load. You need to add an option to turn off autosave, or fix the autosave issue.
For help with Minecraft on Nintendo consoles, please visit https://help.minecraft.net/hc/en-us/articles/360029729112-Minecraft-on-Nintendo-consoles …. If you think you've found a bug, please visit https://bugs.mojang.com/secure/Dashboard.jspa … and report it so that the developers can see. ^JR