Unreal Engine Issues
Unreal Engine Issues
Niagara particles with collision will continue to move along World +Y-axis
UE - Niagara - Apr 7, 2022Niagara particles with collision slide in the direction of World +Y-axis after the point they should have stopped. If the user uses multiple systems in the same spot all the emitters appear to bounc ...
No Editor Audio on Linux when using ALSA
UE - Platform - Linux - Oct 31, 2017No sound play in editor when using ALSA (Advanced Linux Sound Architecture), and log spam when launching a project ...
VSM SMRT SamplesPerRay CVars behave differently if groom assets are present leading to a potential full-scene shadow
UE - Graphics Features - May 28, 2025When a groom is present, setting any SamplesPerRay SMRT CVar to zero results in an unexpected complete shadow projected from the light. ProjectLight() in VirtualShadowMapProjection.usf has addition ...
BP Component is not destructible if the Object Type is set during runtime
UE - Simulation - Physics - Destruction - Mar 16, 2015BP Component is not destructible if the Object Type is set during runtime. If the Object Type is set manually before PIE is started, the BP component will destroy correctly. ...
Update Capture causing Post Process Flickering across whole scene
UE - Graphics Features - Jun 30, 2015When a Scene Capture Actor is updating the content via an Update Content Node, the Static meshes in the world will flicker or pulse according to the update timer for the Scene Capture Actor. This o ...
GetMouseX returns stuttering value if ShowMouseCursor is enabled
UE - Gameplay - Input - May 11, 2022Showing the mouse cursor and holding down the left mouse button while dragging will cause the MouseX event to broadcast incorrect axis values. ...
"Active" marker on shot track scales improperly when using Time Scale
UE - Anim - Sequencer - Apr 21, 2017"Active" marker on shot track scales improperly when using Time Scale ...
Find Session does not always return the correct amount of sessions
UE - Networking - May 10, 2016Find Session does not always return the correct amount of sessions when finding sessions at the same time. ...
'Random Pitch Angle' not working when 'Collision with World' is enabled for Foliage instance settings
UE - World Creation - Worldbuilding Tools - Foliage - Jan 16, 2017The 'Random Pitch Angle' setting within the Foliage instance settings are being overridden or ignored when 'Collision with World' is also enabled. This occurs in the binary releases of 4.12.5, 4.13 ...
Using Snap Rotation displays the Rotation wrong (or calculates the Rotation wrong and losses precision) when the Y rotation axis is 90 degrees
UE - LD & Modeling - Modeling Tools - BSP - Nov 7, 2019Although the Details Panel shows the degrees wrong, the object seems to have done it's rotation correctly but not in the right degrees. It will rotate to the position specified but it goes the wrong ...