Unreal Engine Issues
Unreal Engine Issues
AreaNavModifiers generated by SplineNavModifierComponent have the component-to-world transform incorrectly applied twice
UE - AI - Navigation - Aug 15, 2025USplineNavModifierComponent was made available in UE 5.4. It generates several FAreaNavModifier instances covering a region with a certain thickness around a USplineComponent, and worked correctly u ...
USkinnedMeshComponent::FindClosestBone does not respect bRequirePhysicsAsset parameter
OLD - Anim - Mar 20, 2017A licensee has reported that the USkinnedMeshComponent::FindClosestBone function does not respect the bRequiresPhysicsAsset parameter, resulting in the bone returning bones that are not part of the ...
Event tick not firing when in an actor component that is added to an actor
UE - Gameplay - Blueprint - Aug 22, 2017When using actor components, if you delete a node, such as event tick and then add it to an actor, even if you modify the component again, such as adding the event tick event back, the component wil ...
[CrashReport] UE4Editor_Sequencer!TBaseMulticastDelegate<void>::RemoveDelegateInstance() [delegatesignatureimpl.inl:964]
UE - Anim - Sequencer - Oct 5, 2017This is a slightly common crash coming out of the 4.17.2 hotfix. Users have not provided any descriptions of their actions when the crash occurred. Source Context 951 /** 952 * ...
Blueprint Projects can't make APK without compiled .so Error when packaging for Android with any Plugin Disabled
UE - Platform - Mobile - Sep 5, 2018Blueprint Projects can't make APK without compiled .so Error when packaging for Android with any Plugin Disabled. Also seeing Gradle errors if SteamVR plugin is disabled. Setting min version to 14 ...
GAS: RemoveReplicatedLooseGameplayTag on unadded tag causes it to be replicated
UE - Gameplay - Gameplay Ability System - Nov 17, 2022A UDN user found that calling AbilitySystemComponent->RemoveReplicatedLooseGameplayTag(TagToRemove); while the gameplay tag was not in the TagMap, will create an entry for it with count 0, see ...
Allow Window Resize has no effect on Linux
UE - Platform - Linux - Jun 8, 2017Checking the option for Allow Window Resize in Project Settings allows a the borders of a standalone window to be grabbed and used to resize the window. This does not behave the same on Linux and t ...
Editor crash on blueprint compile that contains edited BP Struct
UE - Gameplay - Blueprint - Sep 11, 2017When a blueprint graph contains a "Make Struct" node for a blueprinted Struct, changing any pin's type causes the editor to crash when the blueprint is compiled. Regression: No - same behavior occu ...
Crash promoting a float pin from a split vector in Anim Blueprint
OLD - Anim - Jun 7, 2017REGRESSION Yes, does not occur in 4.16. Crash occurs when the user splits a vector pin on an anim node and then tries to promote one of the float nodes to variable. I could not reproduce this issu ...
Crash when reverting to the default material in the static mesh editor
Tools - Apr 17, 2017The editor crashes when attempting to revert the material on the cube back to default which is the World Grid Material. The cube is already set to WorldGridMaterial so I am not sure why the arrow ...