Unreal Engine Issues
Unreal Engine Issues
AnimNotifies get reproduced more times than expected.
UE - Anim - Sep 3, 2024When setting an AnimNotify to an AnimationSequence, this AnimNotify can be triggered multiple times when only set once. This issue only happens when the mentioned AnimationSequence that contains the ...
Mobile Preview -> AutoLandscape Material broken if created in 4.22+
UE - Platform - Mobile - Oct 25, 2019Landscape Layers created in 4.22+ revert to default material in Mobile Preview. Confirmed in MAIN at CL 9730599 ...
AllowCommandletRendering D3D12 device crash
UE - Graphics Features - May 10, 2021Distance Field shadow culling when view is at certain angles
UE - Graphics Features - Aug 4, 2015Distance Field shadows are culled for larger meshes at certain angles of the cameras view position. Map with reproduced setup is attached. ...
Component properties cannot be edited for instances of a Blueprint if more than one instance of that Blueprint in the level is selected
UE - Gameplay - Blueprint - May 5, 2017Properties of components that are added to a Blueprint cannot be set in the Details panel for instances of that Blueprint in the level if multiple instances are selected. These components also do no ...
Sequence with restore state set is causing a "Fatal world leaks detected" crash
UE - Anim - Sequencer - May 14, 2025We recently had a few occurrences of crashes caused by a "Fatal world leaks detected" error when unloading a level (in a packaged game and in editor). I tracked down what was keeping a references t ...
Levels lose folder hierarchy in Levels window on streaming method change
Tools - Mar 19, 2019In the Level Window, Sub Levels which are nested inside of a folder will lose their hierarchy upon changing their streaming methods. ...
Some texture files cannot be exported from the editor
Tools - Feb 4, 2015There are instances where some texture files cannot be exported from the editor. In this older post a user had reported this with the file T_Sky_Blue from the engine folder. Only this file has been ...
[Review Tool] The editor crashes while attempting to load a modified Blueprint that uses Interface for review.
The crash is due to previous Rename operation, that reset a preallocated array which later FAsyncPackage2::ExecuteDeferredPostLoadLinkerLoadPackageExports tries to use. Before loading change list ...
Invisible child components appear for one frame on scene capture 2D windows if another component is attached.
UE - Gameplay - Oct 1, 2015Invisible child components appear for one frame on scene capture 2D windows if another component is attached. ...