affects 1.19.41: snow is stacking 1 block tall and does not melt correctly. all attachments are naturally generated. sometimes the game also creates sharp borders in the snow between chunk borders and in rare cases snow spawns in places underneath full blocks. mobs spawn inside the one block tall snow too which makes them unable to move. snow can also be generated on farmland without crops.
Still an issue as of 1.17.10.
It is a bug. The snow is supposed to pile up during snowfall, but after snowfall ends and during daytime, the snow is supposed to melt, which doesn't happen at the moment. It really does ruin the experience of building in snow.
Affects 1.17.10
A discovery I made by accident which is demonstrated in an attached video file: The snow is temporarily back to normal if traveled into the end and back to the overworld. Leaving and re-joining increases the snow height again, mostly back into full blocks