Unreal Engine Issues
Unreal Engine Issues
Game thread anim task evaluation can happen on first frame update even when bTickAnimationOnSkeletalMeshInit is unset
UE - Anim - Runtime - Anim Blueprints - Nov 28, 2024The bTickAnimationOnSkeletalMeshInit should prevent a game thread update of the anim instance on the frame that a mesh is spawned. However, a bug in RefreshBoneTransforms is resulting in a game thr ...
Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1
UE - Networking - Feb 4, 2016Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1. The Client pauses the timer as expected. With only one player, timers are paused as expected. ...
Dragging to the content browser from an open import selection window will cause an assertion crash
UE - Editor - Content Pipeline - Import and Export - Jun 21, 2016Using a very specific way of importing an FBX will cause a crash assertion that closes the editor without opening crash reporter. Essentially when using the import button in the content browser and ...
Packaging failed with disabled plugin
UE - Foundation - Cpp Tools - Oct 9, 2018Disabling any plugin causes packaging failure. No repro in 4.19 Also occurring when Disabling all platforms except for windows and changing configuration from development to shipping. ...
PIE window does not match what was set in the New Viewport Resolution setting
Tools - Oct 24, 2019Setting the resolution of PIE to 4K Ultra HD results in the new PIE window going very far out of the bounds of 4K. If you are using two monitors the PIE window will bleed over a good bit into the ot ...
Translucency Volume are not correctly shadowed in 5.5 without Virtual Shadow Maps and are not light correctly by some lights
UE - Graphics Features - Dec 20, 2024TranslucencyVolume spheres are not correctly shadowed nor lit in Unreal 5.5 with VSMs disabled. Unreal 5.4 does correctly shade the sphere without VSMs. There appears to be differences in the outpu ...
Farfield shadow in lumen scene
UE - Graphics Features - Jul 21, 2025Shadows in the Lumen Scene from Lumen's Direct Lighting do not match the world when in the Lumen Far Field. This leads to shadows where there should not be any, and missing shadows where there shou ...
Windowed Fullscreen causes Lighting Variations in Rendered Envrionment
UE - Graphics Features - Jan 18, 2016When a scene is light with a single Stationary Directional Light and a Single Stationary Skylight and packaged to use Windowed Fullscreen, there is a difference in how the scene is rendered compared ...
Straighten Connection shortcut doesn't work after removing array element pin
UE - Gameplay - Blueprint - Feb 8, 2017If an array element is removed from a make array node, using the shortcut for Straighten Connections has no effect until after the Actions menu is opened via right-click then closed. ...
Timeline name changes do not propagate to related nodes
UE - Gameplay - Blueprint - Mar 17, 2015Timeline name changes do not propagate to related nodes. Refresh All does not rename nodes that reference the timeline, and Getters and Setters are no longer valid nodes. Reproduced in 4.7.2 binary ...