Unreal Engine Issues

Mesh Painting sometimes fails to paint the closest face in the hovered area

Sometimes it's not catching certain polys as vertex paint targets. Looks like it happens when there's more than one layer of forward facing geometry over the highlighted area, and it just takes the ...

Using a custom #define as the condition for a UFUNCTION's declaration will cause the function to not show in blueprints

Using a custom #define as the coniditon for an #if / #endif that encapsulates a UFUNCTION that is marked as BlueprintCallable will prevent it from being visible in blueprints despite the #if resolvi ...

Skewed Rotation values from camera actors in print string

When using the camera actor and modifying the rotation values, the values made in the print string do not seem to match the actual values of the camera's rotation. The values appear to be close, but ...

Curves in compressed additive animations interpolate incorrectly when two keys in a row have the same value

Curves compressed from additive animations will not interpolate correctly if they have two keys in a row with the same value. The second key will be ignored, leading to the curve interpolating earli ...

Landscape Grass disappears after sculpting a landscape with "Enable Edit Layers" on

The grass won't spawn after proper material being applied on the landscape. Even after being forced to be spawned (by reloading the level, for example) the grass will disappear again every time the ...

Keying rotation with quaternion interpolation can give unexpected results

Adding keys when quaternion interpolation is enabled can lead to unexpected results.  ...

Rendering sequence with livelink data has issues with smooth engine offset

[Link Removed] for reference Playing back a sequence shouldn't have buffered samples. We should have a single one, which was built from the sequence. We need to make sure when played back that it ...

Object type properties with instanced modifier in a child actor is lost when saving

Enhanced Input does not fire a "Cancelled" event for mappings that were in progress, but removed during a key-rebuild

If the return value of a trigger goes from ETriggerState::Ongoing to ETtriggerState::None, without returning a ETriggerState::Triggered, then there should be a "cancelled" event that is fired when E ...

'Max World Position Offset Displacement' causes culling issue on HISMC/foliage in 5.4

Foliage/hierarchical instanced static mesh components have issues with culling when their material's "Max World Position Offset Displacement" value is a higher amount, e.g. 100.0. ...