Adjusting play speed for animation causes notifies to trigger multiple times

UE - Anim - Sequencer - May 31, 2016

Adjusting play speed for animation causes notifies to trigger multiple times. Creates a stuttering effect. ...

Simple Move in sublevels does not properly function

UE - AI - Sep 14, 2015

Using simple move to location in sublevels causes the blueprint not to respond or function correctly. ...

Is Input Key Down does not work when Any Key is being checked

UE - Gameplay - Input - Jan 6, 2016

If the "Any Key" keybinding is used in the Is Input Key Down node, the node will never return true, even if any key is pressed. ...

LIVE: Changing a Custom Event to Multicast in a parent blueprint causes crash

UE - Gameplay - Blueprint - Nov 13, 2014

Changing a Custom Event to Multicast in a parent blueprint causes crash if the Custom Event is being used in the child blueprint. Callstack: MachineId:DE189244480D3CD0F8CA729A02DD38A6 UserName:tjb ...

(Undo Crash in BPs) [CrashReport] UE4Editor_Core!rml::internal::Block::findObjectSize()

UE - Gameplay - Blueprint - Jul 25, 2017

This is a trending crash in the 4.17 Preview. There was one occurrence of this callstack months ago in 4.15.1, but a number of recent ones in 4.17. User DescriptionsI was pressing cltr+z severl ti ...

[Concurrency] - Voice Steal Release Time Doesn't Work when using a Priority Based Resolution Rule

UE - Audio - Voice Management - Aug 24, 2021

When using a Priority based Concurrency rule, the Voice Steal Release Time is ignored and ejected sounds stop abruptly. Test Notes: See attached video. Note: I've shelved the test map and assets ...

Assertion failed in FNetGUIDCache::CleanReferences during seamless travel after reloading primary asset package

UE - Networking - May 7, 2025

Following this sequence of events, the ObjectLookup and NetGUIDLookup on the server's PackageMapClient will end up in a bad state. In the ObjectLookup Map, the primary asset's package will be mapped ...

BlueprintNativeEvent in Component Subclass does not show up in BP with the component

UE - Gameplay - Blueprint - Apr 20, 2015

If a function is marked as BlueprintNativeEvent inside of a class that inherits from a component (Scene component, Actor component, etc) then the function cannot be called in a blueprint with the co ...

Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor

UE - Gameplay - Blueprint - Dec 9, 2014

Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor. Crash Report: [Link Removed] Call Stack:<unknown module>! KERNELBASE!Rai ...

Blueprint actor variables defined in code cannot be set in the editor

UE - Gameplay - Blueprint - Jan 28, 2015

After creating a class in VS and creating a blueprint based on the class. Setting the actor variable in the BP's defaults tab does not save the setting. Instead it will show as none when trying to ...