Unreal Engine Issues
Unreal Engine Issues
Undoing the pasting of a copied node from the Blueprint Diff tools causes an access violation crash
UE - Gameplay - Blueprint Editor - Aug 24, 2017The editor crashes with an Access Violation if a node that was copied and pasted from the Blueprint Diff tools is removed via an undo. Regression?: No This issue also occurred in 4.16 Branches tes ...
Render state for InstanceStaticMesh doesn't recreate after modification of instances list with RemoveInstance
UE - Gameplay - Blueprint - Sep 14, 2017When Remove Instance is called for an instance static mesh component, the render state is not properly updated, causing some of the instances to not be visible. Workaround: Forcing a call to PostEd ...
Grandchildren of UDataAsset are not properly registered by the Asset Manager
UE - Gameplay - Sep 19, 2017Any child class of UDataAsset (parent) will properly be picked up when the Asset Manager's Asset Base Class" field is set to the appropriate class. However a grandchild class (Child) with the same ...
Planes have a Mesh Distance field exceeds the size of the original mesh
UE - Graphics Features - Sep 20, 2017Planes have a Mesh Distance field exceeds the size of the original mesh when the value is set to 2. This behavior does not seem intended as the cube does not experience this issue when the value is ...
[CrashReport] Fatal error: Cast of nullptr to Object failed
UE - Gameplay - Oct 5, 2017This is a common and longstanding crash that has affected many users since at least 4.11. Source context not available (error in user code?). User DescriptionsI was duplicating a Set function in c ...
Grid Size adjustment shortcuts don't functions in blueprints
UE - Gameplay - Blueprint - Oct 5, 2017When the shortcuts for "Grid Size(Position):Decrement/Increment" ( '[' and ']' by default) are used in the main viewport editor, the grid size for a blueprint's viewport are updated as well. Howe ...
Camera rotation stops at game border when using Begin play node
Tools - Jan 8, 2018There is an issue where Camera rotation stops at game window border when using Begin play node with the mouse. This issue does not happen if you don't use the begin play node with the Set show mouse ...
Display error when removing foliage instances in standalone or built game
UE - World Creation - Worldbuilding Tools - Foliage - Feb 12, 2018This bug has different behavior depending on the engine version. When tested in 4.19 Preview 4, the 1M_Cube meshes do not render in the standalone/built game. In 4.20, the meshes render but some m ...
Previewing Node in Material Editor Produces Unexpected Output with DX12
UE - Graphics Features - May 16, 2018Per Licensee: Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well. We usually have to force recompilin ...
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 ...