Unreal Engine Issues
Unreal Engine Issues
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 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 - Simulation - Core - 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
UE - Anim - Sequencer - 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. ...
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 ...
Engine crashes when trying to remove unused bones from skeleton
UE - Anim - Runtime - Mar 10, 2021Engine crashes when i try to remove unused bones. I have lot of things going on in those characters, they all share same skeleton. There are anim blueprints with control rig and pose drivers, there ...
Editor crashes when exiting and having a widget blueprint open.
UE - Editor - UI Systems - Dec 22, 2015This is a top crash occurring in the 4.11 Preview Editor crashes when exiting and having a widget blueprint open. Regression: Yes does not occur in 4.10.2. ...
Fire tower lights do not change when held down in StrategyGame on iOS
Docs - Samples - Aug 18, 2016The fire tower charge effect is not working correctly on iOS. This was tested with an iPhone6S_6240 OS: 9.3.2 Does not occur on Android. Tested on Galaxy S7 ...
Crash Occurs While Slicing Procedural Mesh Component
UE - Gameplay - Sep 19, 2016A crash is occurring when attempting to slice a procedural mesh that has the Create Other Half option enabled. Found in 4.13.0. Reproduced in Main CL 312 ...