Unreal Engine Issues
Unreal Engine Issues
Using a user generated timeline in blueprint causes an exception in engine code.
UE - Gameplay - May 13, 2015This crash is caused by an exception that is thrown due to the functions inside of a blueprint based off a user-defined class that is suppose to mimic Timelines. ...
Nested comments are not parsed correctly by UHT when a second UClass is declared
UE - Foundation - Cpp Tools - UnrealHeaderTool - Mar 14, 2016Using nested comments when also declaring a second UClass in the same header file causes the UHT to have issues when parsing, resulting in a crash of UHT. ...
Changing function return type in code does not update blueprint pin links
UE - Gameplay - Blueprint - Oct 31, 2016When the return value of a C++ function is changed without preforming a hot reload, instances of the function node used inside a blueprint function will have their Return Value pin updated to the co ...
Attaching capsule to Root component triggers VS Break on PIE
UE - Foundation - Core - Feb 13, 2015When a capsule is attached to an actor Root Component followed by playing in editor through VS debug mode there is a breakpoint triggered in VS upon pressing PIE. Continuing through the break allow ...
Managed particle systems can fail to be removed from managed ticking when pending registration
UE - Niagara - Mar 31, 2021UParticleSystemComponent::SetComponentTickEnabled can fail to disable ticking due to IsTickedManaged not checking if the particles system is pending registration. The crash was in part because of c ...
Hierarchical Instanced Static Mesh component instances are not duplicated correctly if the parent is duplicated
UE - Graphics Features - Dec 16, 2016Duplicating an actor with a Hierarchical Instanced Static Mesh component that has an instance will duplicate the instance as well, but this instance is not rendered. Please note, this was discovere ...
CommitMapChange doesn't fully deal with sub-levels
UE - Gameplay - Jan 12, 2017Per https://udn.unrealengine.com/questions/329206/crashes-when-streaming-levels-in-414.html When inspecting the code for this report, it has become clear that the streaming levels of the incoming m ...
[CrashReport] UE4Editor_DetailCustomizations!FBrushDetails::OnClassPicked() [brushdetails.cpp:306]
Tools - Nov 10, 2017This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context296 // make sure the brushes are re ...
D3D device being lost ( DXGI_ERROR_DEVICE_REMOVED ) on both D3D11 and D3D12
UE - Rendering Architecture - RHI - Aug 10, 2020It is hard to reproduce, but a licensee reported in UDN that it crashed on his computer frequently. He provided two crash dumps with logs which I uploaded here.[Link Removed][Link Removed] OS: W ...
Assertion failed: PlatformNeedsExtraDeletionLatency()
UE - Rendering Architecture - RHI - Mar 5, 2019Animating a HISM along a spline when many other HISMs are present will result in a crash in 4.22. Confirmed in 4.23 MAIN @ CL 5291468 ...