Unreal Engine Issues
Unreal Engine Issues
Ensures reparenting a child blueprint with a call to parent function in interface function
UE - Gameplay - Blueprint Editor - Oct 10, 2017REGRESSION: Yes, does not occur in 4.17.2 Ensures occur when reparenting a child blueprint that has a Call to Parent Function in a function from a Blueprint Interface. ...
PIE captures mouse when "Game Gets Mouse Control" is disabled
Tools - Oct 31, 2017When entering PIE, the mouse is captured by the viewport regardless of the "Game Gets Mouse Control" setting. Regression: No - Same behavior occurs in 4.17.2 ...
Crash when Landscape Max LODLevel is set to 0
UE - LD & Modeling - Terrain - Landscape - Mar 16, 2018Reproduced in 4.19.0 CL 3944462 and 4.20 Main Unable to reproduce in 4.18.3 CL 3832480. This is a regression. ...
Unable to package with nativized functions that have a delegate-type input variable
UE - Gameplay - Blueprint - Oct 2, 2018Attempting to package a project that has nativization enabled for a function that takes a delegate-type variable as an input results in failure. Regression?: No This occurred in 4.19 ...
Crash when duplicating multiple components at once
UE - Gameplay - Blueprint - Apr 4, 2019When duplicating multiple components at once it appears to crash the editor. Regression: Yes, this appears to be working in the previous version of the engine (4.21.2-4753647) ...
Fractured Geometry Collection triggers a crash when colliding with an Animation Blueprint with a Rigidbody Node
UE - Runtime - Simulation - Sep 25, 2023This is not a regression. Tested in //UE5/Release-5.2 CL26001984 The editor crashes when a physics asset of an animation with rigid body collides with geometry collection. ...
LevelSequenceActor sequencer loaded with DataLayer does not progress track when played
zComponent - Archive - Nov 1, 2023In UE5.2, there seems to be a problem with the initialization of the reloaded LevelSequenceActor. SequencePlayer->Initialize is not called in ALevelSequenceActor::InitializePlayer() and Tick regist ...
Rotator visual helper appears in local Presentation exports
TM - Tools - Nov 6, 2025Reported in SF [Link Removed] The Rotator animator's visual helpers will be visible in locally exported Presentations when it should be hidden. This does not affect the Translator animator. ...
Access Violation crash deleting a Widget Blueprint with an unsaved Animation track - FSequencer::Tick()
UE - Anim - Sequencer - Jun 19, 2017Encountered an Access Violation crash while deleting an Widget Blueprint with an unsaved Animation Track. The callstack references FSequencer::Tick(). I was not able to reproduce this issue in UE4/ ...
In Standalone mode, when reading world partition actor descriptors for BP actors, "bIsSpatiallyLoaded" receives its value from the native base class instead of the BP class, so BP actors are loaded/unloaded based on the wrong condition.
UE - World Creation - Worldbuilding Tools - World Partition - Oct 15, 2024Consider an actor defined in C++ with "bIsSpatiallyLoaded" set to true (the default), and a derived blueprint that overrides "bIsSpatiallyLoaded" to false. Now consider an actor instance of that blu ...