Unreal Engine Issues
Unreal Engine Issues
MaxChannels (Voices) is printed incorrectly to the Output Log on new projects
UE - Audio - Mar 16, 2022The Max Channels (voices) setting displays in the output log as 0 on new projects. Likely a result of [Link Removed]. Issue is in display only (there are 32 voices), but should ideally report the de ...
UnrealVS: Compile Single File no longer working after upgrading to 5.3
UE - Core - Cpp Tools - Oct 2, 2023After installing the UnrealVS version that arrived with 5.3. I can no longer use CompileSingleFile. It does however work on the Lyra project. One difference I notived, however, is that Lyra seems to ...
FAnimationRuntime::BlendPosesPerBoneFilter() causes an assertive crash when Skeletal Mesh LOD is changed
UE - Runtime - Animation - Nov 1, 2023The crash occurs from "check(BoneBlendWeights.Num() == NumBones);" This crash occurs when the following conditions are met;The skeletal mesh LOD is changed.The number of bones is difference between ...
A LevelSequence will lose the binding to objects contained in a level instanced inside another level
UE - World Creation - Worldbuilding Tools - Level Instances - Sep 15, 2025A LevelSequence will lose the binding to objects contained in a level instanced inside another level on 5.6 and up. Refer to the reproduction steps or the shared repro project provided by the licens ...
Linux editor can fail on start due to a stale TPS library in Engine/Binaries/Linux
UE - Platform - Linux - May 21, 2015For 4.8, we moved LinuxNativeDialogs, a third-party library, to a different location (and also changed its API somewhat, so the old library is binary incompatible). However, some users apparently a ...
Destructibles using Form Extended structures with rigid body collision gives wrong hit result
UE - Simulation - Physics - Destruction - Jan 7, 2015DESCRIPTION: When using form extended structure with DMs that are hit by a rigid body the resulting hit does not reflect the correct actor if they are both using form extended. If a DM without form ...
SpringArm causes physics to fail for a character standing on the physics object
UE - Gameplay - Mar 24, 2016SpringArm causes physics to fail for a character standing on the physics object User Description: I am updating my marketplace content for 4.11 using preview 7 build (EDIT: RECHECKED WITH PREVIEW ...
Assertion failed: GEditor->GetSelectedActorCount() == 1 in FLevelEditorActionCallbacks::Paste_CanExecute
Tools - May 3, 2017This is a high frequency crash occurring for our users. It appears to be the same crash reported in [Link Removed], however that was fixed in 4.15.0, and the specific repro steps are verified to no ...
Cannot package an Engine plugin if another Engine plugin depends on the plugin being packaged
UE - Foundation - Cpp Tools - Plugin System - Nov 12, 2018Packaging an Engine plugin fails if another Engine plugin lists that plugin as a private dependency. In the two attached plugins, PluginA lists PluginB as a required plugin in its .uplugin file, and ...
Renaming blueprint macro causes Failed import for EdGraph errors
UE - Gameplay - Blueprint - Feb 4, 2022Macro libraries try to support guid-based renaming: when a specific macro is renamed blueprints using the old name will automatically point to the new name and work properly. However, this fixup hap ...