Unreal Engine Issues
Unreal Engine Issues
Crash when compiling Blueprint class based off C++ actor with a Niagara component that has a user color curve
UE - Niagara - Mar 6, 2020When creating a blueprint class based on a C++ actor with a Niagara component, color curves will cause the editor to crash when compiling the blueprint. This will impact users creating their own cla ...
Crash occurs when diffing blueprint that has had one of its variables changed to a Soft Object Reference
UE - Gameplay - Blueprint Editor - Oct 3, 2017A crash occurs when diffing a blueprint that contains an array that has changed from an Object Reference to a Soft Object Reference. Note: I figured that this could be related to another bug that I ...
Blueprints break when implementing a duplicated BP interface along with the original
UE - Framework - Blueprint - Mar 1, 2024When duplicating a blueprint interface, the GraphGuids of the original BP interface's function graphs are unchanged: function graphs across the two BP interfaces now have the same GraphGuid. This is ...
Crash occurs selecting Camera Actor and Cine Camera Actor at same time
Tools - Apr 11, 2017Was reviewing test cases for new Bloom feature and was looking at different actors that make use of PP. Happened to select a Camera Actor and Cinematic Camera actor at the same time which led to thi ...
When use Sequence Camera Shake Pattern, Level Sequence occurs error
UE - Anim - Sequencer - Mar 28, 2022When I apply the Sequence Camera Shake Pattern to a Sequencer's camera, I get an error when playing it. ...
Ensure when pasting copied nodes into an Object
UE - Gameplay - Aug 7, 2018When copy and pasting nodes from an Actor Blueprint to an Object Blueprint the Editor stalls for a bit and an ensure occurs. This issue was reported and tested in 4.19.2 (CL-4033788). This issue ...
Crash saving blueprint with a Get Float Attribute node and the attribute pin is set inline
UE - Foundation - Core - May 5, 2020REGRESSION: Does not occur in 4.24 Crash occurs when saving a blueprint that is using a Get Float Attribute node and the Attribute pin is set inline. Does not occur if the pin is connected. ...
Retargeting an Animation to a Skeleton with a Virtual Bone causes the Engine to crash
OLD - Anim - Jan 14, 2019This crash occurs when trying to retarget an animation onto another skeleton with a retargeting rig that references a virtual bone. This issue could be similar to [Link Removed] This issue was re ...
Projects crash on Android when trying to load mips
UE - Platform - Mobile - Jan 20, 2017Projects that are deployed in the Debug configuration crash when trying to load mips on the Android device. I do not see this issue when launching a project onto Android using the Test configuratio ...
Crash when using StaticDuplicateObject with mismathced Source and Destination class types
UE - Foundation - Jun 19, 2025Starting in Unreal Engine 5.4, StaticDuplicateObject internally switched to using Unversioned Property Serialization (UPS) for performance reasons. However, UPS assumes the source and destination ob ...