The world loads chunks very slowly and will sometimes unload loaded chunks. The areas are not new to my world so I don't think it has anything to do with generating new chunks. This happens in all my worlds.
MC-150071
1.14 world loading/rendering issues
Resolved
Duplicate
1
John Smith
(Unassigned)
Unconfirmed
(Unassigned)
Minecraft 1.14
Retrieved
Already known by everyone. Mojang needs to fix this. Duplicates MC-149178