Unreal Engine Issues
Unreal Engine Issues
Cloth jitters in Movie Render Queue renders when temporal sampling is enabled
UE - Anim - Sequencer - MRQ - Dec 6, 2022The Cloth simulation time step smoothing is interfering with the substepping fix for multi Temporal Samples by changing the very variable DeltaTime and causing some large errors in the cloth simulat ...
Chaos Cloth: NaNs can be introduced from bad AnimatedPositions/Normals
UE - Simulation - Physics - Character - Aug 17, 2024We've worked out at least a possible way this can occur from using uninitialized AnimatedNormals values when changing LODs. Ensuring all AnimatedNormals are initialized appears to fix the problem. ...
Procedural Sound Wave Fails to Play when returning 0 bytes in GeneratePCMData callback
UE - Audio - Aug 2, 2016Returning 0 bytes in GeneratePCMData results in the procedural sound wave not continuing to play audio. Instead of returning 0, we need to return an empty buffer if the procedural sound wave doesn't ...
Hierarchical Instanced Static Mesh component instances are not duplicated correctly if the parent is duplicated
UE - Graphics Features - Dec 16, 2016Duplicating an actor with a Hierarchical Instanced Static Mesh component that has an instance will duplicate the instance as well, but this instance is not rendered. Please note, this was discovere ...
Packaging fails when nativized blueprint implements interface with virtual function
UE - Gameplay - Blueprint - May 18, 2017If an interface contains a virtual function that returns "nullptr", If an interface contains a UFUNCTION that has a TSubclassOf type as a parameter or return value, implementing the interface in a b ...
Artefacts with Volumetric Clouds
UE - Graphics Features - Nov 2, 2022(Enduring Games) Please see UDN - Case includes project and potential fix from customer. Need to verify that it does not affect other parts of the volumetric composition. bHasValidSamples is the sam ...
Actors in 4.16 do not enter a resting state when expected
UE - Simulation - Physics - May 17, 2017There is extra random bouncing that can last a couple of seconds that does NOT occur in 4.15.2. Sometimes the cube would look like it settled, then randomly pop and bounce again. This happened on b ...
Attached Project Crashes When Attempting to Open Blueprint
UE - Gameplay - Blueprint - Nov 11, 2015The project in question: [Link Removed] The user is experiencing an issue where they've fixed compile errors on their NPC blueprint, and now are unable to open it without experiencing a crash. Righ ...
Print String node will stop printing to the screen if PIE is exited while Gameplay Debugger is active
UE - Gameplay - Feb 15, 2017Print String node will stop printing to the screen if PIE is exited while Gameplay Debugger is active. Restarting the editor fixes the issue. ...
BP - Array Get node can result in BP compiler note on load with reference types.
UE - Gameplay - Blueprint - Apr 10, 2017This is similar to [Link Removed], only in this case, the "Array Get" node is implemented as a UK2Node_GetArrayItem and not a UK2Node_CallArrayFunction. The fix for [Link Removed] currently applies ...