Unreal Engine Issues
Unreal Engine Issues
Keeping editor unfocused while in PIE leads to memory leak
UE - Foundation - Core - Jun 22, 2016Keeping editor unfocused while in PIE leads to memory leak, eventually freezing the editor. The editor must be closed through task manager and leaves no crash report or log error. ...
RemoveWindSource modifies game thread array while in a parallel for loop.
UE - Simulation - Physics - Apr 16, 2021FScene::RemoveWindSource is called from a parallel for loop, and concurrently deletes wind component pointers from the same game thread array causing crashes when the scene contains multiple wind so ...
FAnimNode_TransitionPoseEvaluator uses FStackAttributeContainer to cache data over multiple frames
UE - Anim - Runtime - Sep 15, 2021FAnimNode_TransitionPoseEvaluator can cache a pose over multiple frames using FStackAttributeContainer rather than the heap equivalent. This will likely crash at some point if any user uses the cac ...
Changing BlueprintCallable function's code results in Warning in blueprint that should be considered an Error
UE - Gameplay - Blueprint - May 3, 2016A user reported an issue where, if a BlueprintCallable function's parameters are edited, a blueprint using a BlueprintCallable function will give warnings instead of an error for a problem after the ...
Ensure on Mac when applying materials from content browser
UE - Rendering Architecture - Materials - Mar 14, 2015User reports that dragging materials into the editor from the content browser causes a hitch, followed by an ensure that. The user could not produce a crash report. Logs included Unable to reprodu ...
Using a Sequencer event track to set playback position to a time before the event will cause an infinite loop
UE - Anim - Sequencer - Nov 10, 2017Creating a Sequence with an event track that calls SetPlaybackPosition to a time prior to the event key will cause a crash 100% of the time. This will occur even if the event is set up to only fire ...
ISM Component in an instanced BP does not take into account changes to NumCustomDataFloats from the BP class
UE - Graphics Features - Sep 16, 2022PerInstanceSMCustomData is bulk serialized and doesn't get changed on the BP instance when changing NumCustomDataFloats, possibly causing out of bounds array access leading to a crash. Possible sol ...
Using nativized functions on buttons to spawn meshes causes assertion failure
UE - Gameplay - Blueprint - Oct 25, 2016An assertion failure is thrown when using nativized functions on an Android device. ...
MetalRHI Asserts When Using "Profile GPU" With RHI-Thread/Parallel-Execution
UE - Graphics Features - Sep 14, 2016When the RHI thread is enabled (with or without parallel-execution) for Metal it isn't currently possible to run "profilegpu" because the GPU timestamp emulation code isn't multi-thread safe and pro ...
Mousing over component list of an actor with InputComponent causes breakpoint in VS during PIE
Tools - Feb 24, 2015When debugging a project through Visual Studio, if an actor with an Input Component is selected in the World Outliner a breakpoint will trigger in VS when attempting to select/mousing over any compo ...