Unreal Engine Issues
Unreal Engine Issues
Server crashes when client connects after Server has reloaded a sublevel with a deleted actor
UE - Networking - Jul 13, 2017UNetDriver::DestroyedStartupOrDormantActors maintains a list of deleted startup (and dormant) actors. This is used to notify clients that have joined the server of Actors that need to be destroyed ...
Out-of-Bounds Access During Partial Updates of ISMC Per-Instance Custom Data
UE - Rendering - Features - Jan 6, 2026When using instance custom data values, removing an instance and changing the number of custom data floats in sequence can cause an array-out-of-bounds crash. The underlying arrays are not resized ...
Client crash on seamless travel in DataReplication with lag
UE - Networking - Jan 11, 2016When server traveling, client may crash due to lag while attempting to replicate object/property. ...
RewindDebugger draws debug capsules with its base location as center
UE - Gameplay - Oct 31, 2024Context UE_VLOG macros can be used to capture debug shapes into both a Visual Logger recording and a Rewind Debugger recording. Problem In the Rewind Debugger, the capsule shapes are drawn at an in ...
Making changes to a Camera Shake while previewing the Camera Shake triggers a crash
zComponent - Archive - May 23, 2022This is not a regression. Tested in //UE4/Release-4.27 CL 18319896 Making changes to a Camera Shake while previewing the Camera Shake triggers an Assertion upon compiling. ...
Crash when deleting the Add Component By Class node after changing the Relative Transform of the component
UE - Gameplay - Blueprint - Mar 31, 2021When adding the Add Component By Class node, choosing a class that has a Relative Transform pin, changing the transform, and deleting the node the editor crashes. I tested this with the Skeletal Mes ...
Deleting elements from TMap Struct in actor blueprint editor causes Crash
UE - Editor - UI Systems - Slate - May 24, 2019Deleting elements from TMap Struct in the Actor Blueprint Editor (specifically, deleting elements from them) causes Unreal to crash ...
Editor crashes when keying a frame to an Animation from Pose with Appended Frames
UE - Runtime - Animation - May 17, 2022This is a regression. Tested in //UE4/Release-4.27 CL18319896 Editor crashes when keying a frame to an Animation from Pose with Appended Frames. ...
UEditorValidatorBase::ValidateLoadedAsset() is not using the K2_ValidateLoadedAsset() output, effectively ignoring the Blueprint validation
zComponent - Archive - May 1, 2025UEditorValidatorBase::ValidateLoadedAsset() is not using the K2_ValidateLoadedAsset() output, effectively ignoring the Blueprint validation. The K2Result is not used later in the function, and this ...
Display 1.2 bouncing ball has a typo in the Math Hall of ContentExamples
Docs - Samples - Sep 19, 2016Just a typo that needs to be fixed. ...