Since update 1.16.3-fabric 3, there is a new incompatibility with Optifine/optifabric that makes life bars floating above target look "milky". Whatever color these bars are supposed to be, they are ...

EDIT: This issue is probably the same as #4976. I'll close it if turns out to be the same issue. This issue existed in 1.15.2 G1 pre1 in both singleplayer and multiplayer, and was fixed in a later ...