Unreal Engine Issues
Unreal Engine Issues
Crash after adding Virtual Bone, then Creating Asset
OLD - Anim - Jul 5, 2017Occurs on? 4.16 - 3466753 - YES 4.17 - 3521650 - YES Error message: Assertion failed: RefBonePose.Num() == NumBones [Link Removed] [Line: 4400] Source Context:4387 ResetAnimation(); 4388 ...
Once an actor channel is closed by NetCullDistance, root motion movement synchronization stops working
UE - Networking - Jul 12, 2021Properties that uses DOREPLIFETIME_ACTIVE_OVERRIDE (ex. RepRootMotion ) will also skip replication when an actor channel is newly opened. This means that if the variables on the server side do not c ...
Editor queries source control for files outside the project or engine
UE - Platform - XR - May 12, 2022When using SVN as SSP, the following warning will be output to the log LogContentStreaming: Texture pool size now 1000 MB LogSourceControl: Attempting "svn status --show-updates --verbose --xml "/ ...
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 ...
Available network bandwidth is too low for uncapped but slow frame rates
UE - Networking - Sep 24, 2020The networking system has a max frame rate of 120hz by default. Inside UNetConnection::Tick it computes an estimated bandwidth by using that max frame rate, the engine's max frame rate, and the actu ...
Crash in Blueprint when clicking on Component variable name that remains after Component was deleted
UE - Gameplay - Blueprint - Jul 25, 2017This is a common crash in 4.16 and trending in the 4.17 previews. It can be reproduced by clicking on the name of a variable that remains listed in a Blueprint after the associated component has al ...
CPF_TextExportTransient and RF_TextExportTransient inconsistent behavior
UE - Framework - Blueprint - May 23, 2024The TextExportTransient can be specified as a property flag and object flag. Behavior is inconsistent: there are many ways in which an object marked TextExportTransient can still be part of the text ...
Branching Points in a Montage Affect the Rotation Outcome of Root Motion
UE - Anim - Runtime - Mar 28, 2025When playing Montages with Root Motion, the sub stepper extracts root motion transform in small increments. If a Branching Point exists within the interval being extracted, the extraction range is s ...
UText3DComponent's Text property access: UE 5.3 broke BP setters. UE 5.6 unneccessarily broke compatibility and incorrectly removed BP getters.
UE - CoreTech - Jul 30, 2025Class UText3DComponent from the "Text 3D" plugin contains a "FText Text" member which must be set through a SetText() function to correctly update the component's internal state. Up to UE 5.2, "Tex ...
Feature request: named pak files/chunks
UE - Foundation - Data Pipeline - Cooker - Oct 5, 2023Priority note: 3 licensees requested so far Fortnite and some licensees have requested this feature, but it is a nice to have and has not yet been high enough priority to implement. Many teams rel ...