Unreal Engine Issues
Unreal Engine Issues
Game start slowing down when there are more than 10 sprites in the level
UE - Gameplay - Paper2D - Apr 10, 2018Sprites seem to be drastically affecting FPS in 4.19 projects on Mac devices. ...
Crash on exit with NULL FTextRenderComponentMIDCache
Suggested fix is to relocate the Super::PreExit() call to the end of UGameEngine::PreExit() so that level streaming can be safely flushed before the MID cache is cleaned up. ...
Impossible to save assets after change in redirectors
UE - Foundation - Core - UObject - Dec 13, 2018One of our licensees pointed out this problem. I've tried all the common redirector problems (write / read permission, multiple instances of the editor, renaming the assets, running the commandle ...
Sequence recording in standalone crashes
UE - Anim - Sequencer - Sep 5, 2016We use GetEditorWorldCounterpartActor in the sequence recorder which cant work in standalone builds as it relies on GEditor. The best fix would probably be to just add a guard for GEditor to GetEdit ...
Interfaces implemented and then removed from a parent BP still show a phantom reference from child BPs until they are recompiled and saved
UE - Gameplay - Blueprint Editor - Jul 15, 2020See repro steps. The phantom references can be fixed by recompiling the child BP and saving it. Note that just loading ChildBP2 does not fix/remove the reference during compile-on-load, so it's a ...
Blueprint Instanced Variables Data Erased
UE - Framework - Blueprint - Jan 17, 2024Instanced variables were given a fix in response to this issue: [Link Removed] Once implemented, when the project is compiled the data from the blueprint instanced variable is removed. A recommend ...
Bugs with Material Instances and Landscape Grass
UE - World Creation - Worldbuilding Tools - Foliage - Apr 14, 2016Need to fix the Bug: Parameters that linked to LandscapeGrassOutput in master material instance do not updates automaticaly in viewport. After parameters change you are have to modify any of your us ...
Metallic Materials Get Darker When Directional Light Is Set to Movable
UE - Platform - Mobile - Aug 20, 2018Metallic materials get darker when directional light is set to movable. In 4.19 the same material will render dark in all mobility of the directional light. Found in 4.19 CL# 4033788, 4.20 CL# 4233 ...
Crash when using automated groom import
UE - Editor - Content Pipeline - Import and Export - Jan 5, 2021UDN customer reported that using automated groom import through Blueprint was crashing. This can probably be reproduced with a Python script using an asset import task with the automated flag set to ...
Camera Actor variable (array) no longer editable in Blueprints
UE - Gameplay - Jun 7, 2018This is a regression from 4.19. In 4.19 you were able to change the actor assigned to the array element in a Camera Actor variable. In 4.20 and 4.21 the field is grayed out and displays None with a ...