The following bugs are extremely annoying, especially to composition makers:
Character passing through objects:
The Enhanced Movement mod fixes these bugs simply by spawning a helper object with only a roadway lod, and placing it above the Geom LOD (doing it every frame):
_ins = lineIntersectsSurfaces [ player modelToWorldWorld [0, 0, 1], player modelToWorldWorld [0, 0, -0.2], player, _helper, true, 1, "GEOM", "NONE" ]; (_ins select 0) params ["_pos", "_normal"]; _helper setPosASL _pos; _helper setVectorUp _normal;
This can be done by the engine in a faster way with much less performance impact (e.g. probably no need to do a quadtree update like setPosASL does).
The helper object is only a small square surface in the Roadway LOD, which is extremely easy to make: