Unreal Engine Issues
Unreal Engine Issues
"Allow Explicit Impure Node Disabling" setting still packages development only nodes into shipping builds
UE - Gameplay - Oct 22, 2019Development Only nodes are packaged into shipping builds even when "Allow Explicit Impure Node Disabling" is enabled and the appropriate nodes are marked as "Development only." ...
Pasting a material graph breaks connection to any material function nodes.
UE - Rendering Architecture - Materials - Dec 4, 2019Pasting a material graph breaks connection to any material function nodes. ...
UDataTableFunctionLibrary::AddDataTableRow() fails for blueprint-defined row structure types
UE - Framework - Blueprint - Feb 2, 2024The editor-scripting blueprint node "Add Data Table Row" fails when the Data Table uses a Row Structure that was defined in blueprint. Internally, it checks if the passed-in UScriptStruct is derived ...
Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE
UE - Rendering Architecture - Jul 11, 2024When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...
Montage Section Links Don't Update When Section Deleted
UE - Anim - Gameplay - Mar 21, 2025Hi there, I noticed that there is a problem with Montage Section links not updating when a section is deleted from a montage asset. We had a montage with a "Default" section and a "Loop" section. ...
Disabling "Deprecate" does not disable deprecation on children of that blueprint
UE - Gameplay - Blueprint - May 27, 2016Disabling deprecation in parent classes is not inherited by child classes. Enabling deprecation in the parent is inherited by child classes. This could potentially cause you to have to go through ea ...
VR Editor Taking Input From Wrong Controller in Foliage Painting.
UE - Editor - Workflow Systems - Nov 2, 2016When in Foliage Painting mode, the left trigger press causes the right controller to paint foliage instead of the left controller. This bug does not affect Landscaping or Mesh Painting. This is a r ...
When changing the variable name of Parent Blueprint, only Child Blueprint existing on the opened level becomes Dirty.
UE - Gameplay - Blueprint - Oct 20, 2017Changing the variable name of the parent Blueprint also effects the changes to the child Blueprint, but the Dirty result changes depending on whether it is placed on the level. This means that Child ...
Clicking on object causes EndInputTouch to fire on the press instead of the release
UE - Editor - UI Systems - Slate - Sep 18, 2018When clicking on an object EndInputTouch sometimes fires on the press instead of the release. This was not an issue in 4.19.2 (CL-4033788) and is a regression. However the functionality doesn't appe ...
Setting KeepState as default in LevelSequences makes Sequencer blend animations not as expected
UE - Anim - Sequencer - Nov 27, 2018Setting "Keep State" for an animation in sequencer makes the sequence behave differently in Sequencer and in Play Mode. The animations appear to be blending together instead of having normal transit ...