Presumably due to recent changes to mipmapping. Not being visible from a distance is bizarre, unwanted behaviour; block mipmapping should at least try to keep these visible somehow at the strongest possible mipmap level.
MC-308410
Flowers now appear to vanish when viewed from far away
Resolved
Works As Intended
0
Confirmed
Platform G
Normal
Rendering, Textures and models
26.1.2, 26.2 Snapshot 8
Retrieved
Thank you for helping us improve Minecraft! We saved your files: