Villages, Ruined Portals, Ancient Cities, Woodland Mansions and Outposts disappear as chunk is rendered in 1.21.10.21

Villages, Ruined Portals, Ancient Cities, Woodland Mansions and Outposts will load in at the edge of render distance - then disappear as the player comes closer. 

 

Video attached of a village disappearing as I flew closer. 

 

We checked these structures and they did not disappear - Strongholds, Desert Temple, Jungle Temple, Ocean Monument, Mineshaft, Dungeons, Geodes, and Trial Chambers.