Ditto. Harvest randomly keeps getting visually bigger and starts blocking ground affects. It can affect both players in multiplayer, though at one point my brother saw my harvest as huge, but my screen it was regular size. I also have 3 points in great scythe, though it’s only a graphics glitch and doesn’t affect the actual damage area (point could be the problem though).
Also seems to get worse (or start) after a timeline boss, or shade. Been doing a lot of black sun.