Unreal Engine Issues
Unreal Engine Issues
[CrashReport] FMacWindow::ApplySizeAndModeChanges | SWindow::Resize()
UE - Platform - Apple - Nov 21, 2017This is an infrequent Mac crash in the 4.18 release. The callstack is similar to [Link Removed] and originally thought to be part of the same issue, but that Jira has been fixed and many other simi ...
[Mobile/Forward Rendering] PlanarReflection does not work when the reflection plane faces certain directions
UE - Platform - Mobile - Sep 24, 2025Note: This repros on 4.27 and all 5.x versions. When using the mobile renderer and/or forward shading, Planar Reflection will simply not work if the reflection plane normal has components that add ...
[CrashReport] UE4Editor-Core.dylib!FTextHistory::Rebuild(TSharedRef<FString,()
UE - Platform - Apple - Aug 15, 2017This is a trending Mac crash in 4.17.0 that has also occurred with some frequency since at least 4.14. I have not been able to identify any matching callstack occurring on Windows, although it does ...
Curves from Animation Samples in Aim Offsets are ignored
OLD - Anim - Jul 11, 2017Curves from Animation Samples in Aim Offsets are ignored In the attached project, all of the AimOffset Poses have a value assigned to the TestCurve. If you open the AimOffset and then open the Ani ...
Navmesh blocking representation for cylinders is wrongly offset when the mesh has IsDynamicObstacle=true
UE - AI - Navigation - Jul 16, 2024In a mesh asset, setting Navigation>IsDynamicObstacle=true will make the Navigation / Cylinder Collision projection appear in a wrong position. As described in the case, the fix should reside in Na ...
SaveGame data does not correctly save the value of elements in an int array when the elements are initialized with RandRange() and then set to a known value
UE - Gameplay - Aug 28, 2018After using FMath::RandRange() to initialize elements of an int array in a SaveGame class and then setting all of the values of the array to 0 before using UGameplayStatics::SaveGameToSlot() to save ...
Material Function CylindricalUVs is missing the Object Position
Docs - Samples - Sep 29, 2014The Material Fucntion CylindricalUVs is missing the Object Position node ADDITIONAL NOTES: You can see the UVs wrapping around 0,0,0 without the position node attached, instead of the mesh's pos ...
[CrashReport] Mac crash - FShaderCompilingManager::ProcessCompiledShaderMaps()
UE - Graphics Features - Nov 16, 2017This is an infrequent Mac crash in the 4.18 release. The callstack is a match to [Link Removed] (loading Zen editor on Mac), but that was confirmed fixed for 4.18.0 while this continues for users. ...
Editing a blueprint from a hidden streamed level can reset all actor transforms
UE - Gameplay - Blueprint - Jul 9, 2015When editing an actor blueprint that's inside of a hidden streamed level, the blueprint actor transform will reset to 0,0,0. There is a video that's attached to the AnswerHub post which is very use ...
Transform track can't be edited for Spawnable empty actor in Sequencer
UE - Anim - Sequencer - Oct 2, 2017Transform track for a spawnable Empty Actor always shows 0, 0, 0 and it can't be edited. I could repro this in 4.17.2 and 4.18 Preview 2. This does not happen in 4.15.3 and 4.16.3. So this could b ...