Unreal Engine Issues
Unreal Engine Issues
Android Crash on app launch if AdditionalPluginDirectories contains wildcards in path
UE - Platform - Mobile - Jun 23, 2017Having wildcards in the path for AdditionalPluginDirectories causes apps on Android to crash on launch. When testing this on iOS, the app did not crash but froze at the splash screen instead. Androi ...
[CrashReport] UObjectBaseUtility::IsA | UObjectProperty::SerializeItem
UE - Gameplay - Aug 15, 2017This is a trending crash coming out of the 4.17 release. Update: also occurring in 4.18 User DescriptionsCompiled after Refreshing Blueprint node after changine its namePressed compile after creat ...
Camera Switcher Import option not functioning properly
UE - Anim - Sequencer - Oct 22, 2019In UE 4.20 we got a feature that let you import a FBX file that contains cameras with a camereaswitcher to create a "camera cut track" within sequencer. From the release notes of 4.20: https://docs ...
Mesh reduction modules selection aren't properly applied on engine restart
UE - World Creation - Worldbuilding Tools - May 4, 2023Recent changes in the MeshReductionManagerModule::StartupModule() have introduced issues where it won't respect what reduction modules have been set in the config file. This is a big issue for plugi ...
can not load all actors when load level with ULevel::LoadAllExternalObjectsTag
UE - World Creation - Worldbuilding Tools - Jun 25, 2024the udn link:https://udn.unrealengine.com/s/question/0D5QP00000OxDLH0A3/%E9%80%9A%E8%BF%87%E4%BB%A3%E7%A0%81%E6%88%96%E8%80%85%E8%93%9D%E5%9B%BE%E8%8A%82%E7%82%B9%E5%A4%8D%E5%88%B6%E5%85%B3%E5%8D% ...
Character unnecessary step down during PHYS_Flying mode
UE - Runtime - Character - Jan 15, 2026When MovementMode is set to PHYS_Flying, the character may unexpectedly step down by MaxStepHeight when colliding with a wall near a ceiling. This occurs because UCharacterMovementComponent::StepUp ...
Crash when removing and re-adding instances to an InstancedStaticMeshComponent with PerInstanceCustomData.
UE - World Creation - Worldbuilding Tools - Jan 22, 2026When using an InstancedStaticMeshComponent with PerInstanceCustomData, the number of float elements in the "Custom Data" array should always be equal to NumCustomDataFloats multiplied by the number ...
BlueprintNativeEvent functions break on hot reload
UE - Gameplay - Blueprint - Mar 7, 2015A blueprint that uses a node for a BlueprintNativeEvent function breaks on hot reload. Blueprint cannot be saved or compiled. Compile error states: Error This blueprint (self) is not a HOTRELOADED ...
SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials
UE - Gameplay - Jan 15, 2015SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials. The user who reported this was trying to add a material to a skeletal mesh during runtim ...
Setting Pressed Sound for Widget Style Doesn't Set the Value
UE - Editor - UI Systems - Nov 6, 2015Attempting to set the Pressed Sound for Widget Style dynamically never actually sets the sound. When you click the button, you get no pressed sound. However, when setting the Pressed Sound through t ...