Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Mac crash - libobjc.A.dylib!objc_retain() [UnknownFile]
UE - Platform - Apple - Nov 10, 2017This is a longstanding but low frequency Mac crash. User DescriptionsChanging camera shake values and testing in a new editor window Callstack from Log[2017.11.09-19.23.22:392][ 63]LogMaterial: Mi ...
Imported Substance materials behave incorrectly when applying UV rotation
TM - Tools - May 14, 2026Reported in SF [Link Removed] and on the forums at https://forums.unrealengine.com/t/substance-3d-materials-not-reflecting-light-properly/2718611 UV rotation behavior is incorrect for Substance mat ...
No additional MipMaps Generated on UI Texture Group
UE - Graphics Features - Mar 19, 2019In previous versions of the engine (4.21), 10 MipMaps are generated with the above repro steps. Starting from 4.22 and CLs above the editor only produces 1 MipMap with the above texture settings. T ...
Cannot set FVector values in a "Make Struct" node in Blueprint
UE - Gameplay - May 9, 2019When trying to use any "Make Struct" node that uses vector values, the values typed into FVector fields will reset to 0. This is a regression from 4.21.2 (CL-4753647). This reported and tested in ...
Package build crashes when using Niagara system on a Skeletal mesh
UE - Niagara - May 29, 2019Packaging a project having a skeletal mesh with a niagara system attached to it in the scene causes the build to crash when running the executable. I have attached the log and dmp files relevant t ...
Blueprint's location reset to 0, 0, 0 after being detached in a network environment
UE - Networking - Apr 24, 2017Attaching / Detaching a blueprint actor to a player in a network environment causes location errors when the detach occurs. Even without the attach events being replicated or the blueprint's movemen ...
Planar Reflections do not appear to cull based on the view frustum
UE - Graphics Features - Oct 27, 2016View Frustum and Occlusion culling do not appear to work for Planar Reflections though the stats in PIE seems to indicate otherwise. I've attached two gifs showing View Frustum and Occlusion chec ...
Foliage instances are not included when exporting a scene to FBX
UE - World Creation - Worldbuilding Tools - Foliage - Aug 4, 2016When exporting Foliage instances to FBX the FBX will not contain any of the foliage instances, but will include any other static or movable geometry. This is a regression. This worked in 4.11.2 but ...
UMG Designer preview: Incorrect resolution on Samsung s8 and s9
UE - Editor - UI Systems - Jul 30, 2018"By default, the device profile for android_high (which is used by phones such as the galaxy s8 and s9) gives a scale factor of 1.0 resulting in 1280x720. When choosing a ~2:1 device such as the gal ...
Adding a code class derived from SceneCaptureComponent2D to a project will prevent that project from building successfully in Visual Studio.
UE - Graphics Features - Dec 9, 2014Adding a code class that derives from SceneCaptureComponent2D will cause the build to fail in Visual Studio. Build Errors: 1>MySceneCaptureComponent2D.cpp.obj : error LNK2001: unresolved external ...