Unreal Engine Issues
Unreal Engine Issues
Bloom intensity broken with Post Processing Material replacing Tonemapper
UE - Graphics Features - Sep 25, 2020When replacing the Tonemap using a Post Process material, the Post Process Volume's Bloom Intensity can only be turned on or off, without varying degrees of effect. Reported in version 4.25.3(CL 1 ...
Ray traced shadows appear even after the mesh is hidden
UE - Graphics Features - Lumen - Oct 13, 2020bCastHiddenShadow flag in UPrimitiveComponent doesn't affect ray tracing shadows ...
[MetaSound][Editor] - The base submix toggle is ignored when previewing sounds on the MetaSound graph
UE - Audio - MetaSounds - Apr 1, 2022The Enable Base Submix toggle is ignored in the MetaSounds graph. If the sound is added to a level, it behaves as expected. The Enable Submix Sends toggle works as expected. ...
Importing Vehicle content corrupts SportsCar_AnimBP
UE - Content - Template - Apr 28, 2022If the player imports the Vehicles pack into a blank project some of the cars blueprints will be corrupt and cannot be loaded. This appears to only happen to the Animation blueprints. ...
[Waveform Editor] - If a Sound Wave is trimmed or a transformation is added or removed while paused, play needs to be pressed twice to start the sound again
UE - Audio - WaveformEditor Plugin - Oct 6, 2022From [Link Removed] "There is still a bug happening with editing transformations on pause. If you play, then pause, and then edit a transformation, you have to press play twice to resume play (whic ...
MoviePipeline: HighRes Tiling feature crashes at high resolutions
UE - Anim - Sequencer - MRQ - Jan 4, 2023If you run with -rdgimmediate -onethread you can get the callstack that indicates that MRQ is still attempting to allocate the full sized texture and not the individual tile size. ...
[Attenuation][Air Absorption] - When the listener moves across the min-distance transition point, the HPF pops
UE - Audio - Spatialization - Apr 21, 2022A pop can be heard when crossing the Air Absorption distance range while using an HPF. From Slack: "I tracked it down to specifically the HPF – it's when the filter turns on, it jumps instantly to ...
Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE
UE - Rendering Architecture - Jul 11, 2024When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...
Sampling textures with bias in the path of a custom data pin causes derivative operations when avoidable
UE - Rendering Architecture - Materials - Apr 8, 2025Materials that make use of the analytical derivatives path to avoid hardware derivatives can still generate derivative operations on texture samples when the shading model has a custom data pin and ...
Camera View Transformations in Editor and Sequencer Cannot Be Undo (Ctrl+Z)
UE - Anim - Sequencer - May 26, 2025Camera View Transformations in Editor and Sequencer Cannot Be Undo (Ctrl+Z) Description: When switching the viewport to a specific camera actor, any manual movement/rotation of the camera (via ...