Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor-ApplicationCore.dylib!FMacWindow::ApplySizeAndModeChanges()
UE - Platform - Apple - Oct 27, 2017This is an early trending Mac crash in 4.18. Users have not provided any descriptions of their actions when the crash occurred. Callstack from LogLogAssetRegistry: Asset discovery search completed ...
[CrashReport] UE4Editor-ApplicationCore.dylib!invocation function for block in FMacApplication::DeferEvent()
UE - Platform - Apple - Dec 1, 2017This is an infrequent Mac crash in 4.18.1. Users have not provided any descriptions. Callstack from Log2017.11.27-02.08.07:839][947]LogMaterial: Missing cached shader map for material FLightmassMat ...
Removing components from Landscape with simplified collision results in assertion
UE - LD & Modeling - Terrain - Landscape - May 18, 2017Performing operations on a Landscape with simplified collision can result in an assertion ...
Using blueprint debug step into BlueprintInterface function, occur crash.
UE - Gameplay - Blueprint Editor - Nov 10, 2017If StepIn is performed on a module for which the Interface function is not defined, a crash will occur. ...
Crash on bake pose when skeleton contains a virtual bone
OLD - Anim - Jan 22, 2018When a skeleton contains a virtual bone, performing Bake Pose can crash the editor. ...
Crash removing a pin from an in-use struct, and then undo/redo
UE - Gameplay - Blueprint - Jun 7, 2017REGRESSION No Crash occurs when the user deletes a pin from a struct that is in use, then performs undo and redo on the deleting. ...
Chaos FieldSystem examples in the engine content add field nodes every Tick, which creates too many components
UE - Runtime - Character - May 5, 2026Can we add the field on construction instead of on Tick to avoid the performance overhead caused by creating too many components? ...
Framerate drops when using SceneCaptureComponents with a RenderTarget in VR
UE - Platform - XR - May 14, 2018Using SceneCapture in packaged VR projects causes poor performance. Also observed with SceneCaptureCube Does not occur in 4.18 ...
Crash when Undo after deleting a Material Layer of a Material Instance.
UE - Rendering - Architecture - Materials - Apr 2, 2025In Unreal Engine version 5.5.4, the Editor crashes when performing Undo after deleting a Material Layer of a Material Instance ...
Text layout includes trailing whitespace when wrapping center/right justified text
UE - Editor - UI Systems - Slate - Sep 25, 2017We try and perform the same wrapping behavior as word processors and generally avoid trailing whitespace when measuring for wrapping, but the justification code is still treating it as significant. ...